diff --git a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/_internal/UpdateCallTransformer.kt b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/_internal/UpdateCallTransformer.kt
index 16731f8..bc43913 100644
--- a/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/_internal/UpdateCallTransformer.kt
+++ b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/ir/_internal/UpdateCallTransformer.kt
@@ -6,9 +6,12 @@ import com.javiersc.kotlin.compiler.extensions.ir.asIr
 import com.javiersc.kotlin.compiler.extensions.ir.asIrOrNull
 import com.javiersc.kotlin.compiler.extensions.ir.createIrFunctionExpression
 import com.javiersc.kotlin.compiler.extensions.ir.declarationIrBuilder
+import com.javiersc.kotlin.compiler.extensions.ir.filterIrIsInstance
 import com.javiersc.kotlin.compiler.extensions.ir.firstIrSimpleFunction
+import com.javiersc.kotlin.compiler.extensions.ir.treeNode
 import org.jetbrains.kotlin.backend.common.IrElementTransformerVoidWithContext
 import org.jetbrains.kotlin.backend.common.extensions.IrPluginContext
+import org.jetbrains.kotlin.builtins.StandardNames
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.builders.IrBlockBodyBuilder
@@ -86,13 +89,14 @@ internal class UpdateCallTransformer(
                 .apply {
                     parent = declarationParent
                     addValueParameter {
-                        this.name = "it".toName()
+                        this.name = StandardNames.IMPLICIT_LAMBDA_PARAMETER_NAME
                         this.type = type
                     }
                 }
 
         val letBlockBody: IrBlockBody =
             pluginContext.declarationIrBuilder(letBlockFunction).irBlockBody {
+                replaceUpdateBlockItWithLetBlockIt(updateCall, letBlockFunction)
                 for (statement in updateBlockStatements) {
                     +processUpdateBlockStatement(statement)
                 }
@@ -130,9 +134,40 @@ internal class UpdateCallTransformer(
         return letCall
     }
 
+    private fun replaceUpdateBlockItWithLetBlockIt(
+        updateCall: IrCall,
+        letBlockFunction: IrSimpleFunction,
+    ) {
+        val updateItValueParameter: IrValueParameter =
+            updateCall
+                .getValueArgument(0)
+                ?.asIrOrNull<IrFunctionExpression>()
+                ?.function
+                ?.valueParameters
+                ?.firstOrNull() ?: return
+        val its: List<IrGetValue> =
+            updateCall
+                .getValueArgument(0)
+                ?.treeNode
+                ?.asSequence()
+                ?.filterIrIsInstance<IrGetValue>()
+                ?.filter { it.symbol.owner == updateItValueParameter }
+                .orEmpty()
+                .toList()
+
+        val letItValueParameter: IrValueParameter = letBlockFunction.valueParameters.first()
+
+        for (it in its) {
+            it.symbol = letItValueParameter.symbol
+        }
+    }
+
     private fun IrBlockBodyBuilder.processUpdateBlockStatement(
         statement: IrStatement
-    ): IrStatement = if (statement is IrReturn) irReturn(statement.value) else statement
+    ): IrStatement {
+
+        return if (statement is IrReturn) irReturn(statement.value) else statement
+    }
 
     private fun createCopyCall(updateCall: IrCall, letCall: IrCall): IrCall {
         val tempVarGet: IrGetValue =
diff --git a/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.ir.txt b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.ir.txt
new file mode 100644
index 0000000..70ca699
--- /dev/null
+++ b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.ir.txt
@@ -0,0 +1,250 @@
+FILE fqName:com.javiersc.kotlin.kopy.playground fileName:/no-nest-invoke-update-with-it.kt
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      VAR name:house0 type:com.javiersc.kotlin.kopy.playground.House [val]
+        CONSTRUCTOR_CALL 'public constructor <init> (street: kotlin.String, squareMeters: kotlin.Int) declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
+          street: CONST String type=kotlin.String value="Street"
+          squareMeters: CONST Int type=kotlin.Int value=20
+      VAR name:house1 type:com.javiersc.kotlin.kopy.playground.House [val]
+        CALL 'public final fun run <T, R> (block: @[ExtensionFunctionType] kotlin.Function1<T of kotlin.run, R of kotlin.run>): R of kotlin.run declared in kotlin' type=com.javiersc.kotlin.kopy.playground.House origin=null
+          <T>: com.javiersc.kotlin.kopy.playground.House
+          <R>: com.javiersc.kotlin.kopy.playground.House
+          $receiver: GET_VAR 'val house0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=VARIABLE_AS_FUNCTION
+          block: FUN_EXPR type=kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, com.javiersc.kotlin.kopy.playground.House> origin=LAMBDA
+            FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> ($receiver:com.javiersc.kotlin.kopy.playground.House) returnType:com.javiersc.kotlin.kopy.playground.House
+              $receiver: VALUE_PARAMETER name:$this$run type:com.javiersc.kotlin.kopy.playground.House
+              BLOCK_BODY
+                VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:com.javiersc.kotlin.kopy.playground.House [var]
+                  GET_VAR '$this$run: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                SET_VAR 'var tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=kotlin.Unit origin=EQ
+                  CALL 'public final fun copy (street: kotlin.String, squareMeters: kotlin.Int): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                    $this: GET_VAR 'var tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                    squareMeters: CALL 'public final fun let <T, R> (block: kotlin.Function1<T of kotlin.let, R of kotlin.let>): R of kotlin.let declared in kotlin' type=kotlin.Int origin=null
+                      <T>: kotlin.Int
+                      <R>: kotlin.Int
+                      $receiver: CALL 'public final fun <get-squareMeters> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House' type=kotlin.Int origin=GET_PROPERTY
+                        $this: GET_VAR 'var tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                      block: FUN_EXPR type=kotlin.Function1<kotlin.Int, kotlin.Int> origin=LAMBDA
+                        FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> (it:kotlin.Int) returnType:kotlin.Int
+                          VALUE_PARAMETER name:it index:0 type:kotlin.Int
+                          BLOCK_BODY
+                            RETURN type=kotlin.Nothing from='local final fun <anonymous> (it: kotlin.Int): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>'
+                              CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=PLUS
+                                $this: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.Int origin=null
+                                other: CONST Int type=kotlin.Int value=20
+                RETURN type=kotlin.Nothing from='local final fun <anonymous> (): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box'
+                  GET_VAR 'var tmp_0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+      VAR name:house2 type:com.javiersc.kotlin.kopy.playground.House [val]
+        CALL 'public final fun run <T, R> (block: @[ExtensionFunctionType] kotlin.Function1<T of kotlin.run, R of kotlin.run>): R of kotlin.run declared in kotlin' type=com.javiersc.kotlin.kopy.playground.House origin=null
+          <T>: com.javiersc.kotlin.kopy.playground.House
+          <R>: com.javiersc.kotlin.kopy.playground.House
+          $receiver: GET_VAR 'val house0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=null
+          block: FUN_EXPR type=@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, com.javiersc.kotlin.kopy.playground.House> origin=LAMBDA
+            FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> ($receiver:com.javiersc.kotlin.kopy.playground.House) returnType:com.javiersc.kotlin.kopy.playground.House
+              $receiver: VALUE_PARAMETER name:$this$run type:com.javiersc.kotlin.kopy.playground.House
+              BLOCK_BODY
+                VAR name:tmp0 type:com.javiersc.kotlin.kopy.playground.House [var]
+                  GET_VAR '$this$run: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                SET_VAR 'var tmp0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=kotlin.Unit origin=EQ
+                  CALL 'public final fun copy (street: kotlin.String, squareMeters: kotlin.Int): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                    $this: GET_VAR 'var tmp0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                    squareMeters: CALL 'public final fun let <T, R> (block: kotlin.Function1<T of kotlin.let, R of kotlin.let>): R of kotlin.let declared in kotlin' type=kotlin.Int origin=null
+                      <T>: kotlin.Int
+                      <R>: kotlin.Int
+                      $receiver: CALL 'public final fun <get-squareMeters> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House' type=kotlin.Int origin=GET_PROPERTY
+                        $this: GET_VAR 'var tmp0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                      block: FUN_EXPR type=kotlin.Function1<kotlin.Int, kotlin.Int> origin=LAMBDA
+                        FUN LOCAL_FUNCTION_FOR_LAMBDA name:<anonymous> visibility:local modality:FINAL <> (it:kotlin.Int) returnType:kotlin.Int
+                          VALUE_PARAMETER name:it index:0 type:kotlin.Int
+                          BLOCK_BODY
+                            RETURN type=kotlin.Nothing from='local final fun <anonymous> (it: kotlin.Int): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>'
+                              CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=PLUS
+                                $this: GET_VAR 'it: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>.<anonymous>' type=kotlin.Int origin=null
+                                other: CONST Int type=kotlin.Int value=20
+                RETURN type=kotlin.Nothing from='local final fun <anonymous> (): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box'
+                  GET_VAR 'var tmp0: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box.<anonymous>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in com.javiersc.kotlin.kopy.playground'
+        WHEN type=kotlin.String origin=IF
+          BRANCH
+            if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+              arg0: GET_VAR 'val house1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=null
+              arg1: GET_VAR 'val house2: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            then: CONST String type=kotlin.String value="OK"
+          BRANCH
+            if: CONST Boolean type=kotlin.Boolean value=true
+            then: STRING_CONCATENATION type=kotlin.String
+              CONST String type=kotlin.String value="Fail: \nHouse1: "
+              GET_VAR 'val house1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=null
+              CONST String type=kotlin.String value=" \nHouse2: "
+              GET_VAR 'val house2: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.box' type=com.javiersc.kotlin.kopy.playground.House origin=null
+  CLASS CLASS name:House modality:FINAL visibility:internal [data] superTypes:[kotlin.Any; com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>]
+    annotations:
+      Kopy
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+    CONSTRUCTOR visibility:public <> (street:kotlin.String, squareMeters:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.House [primary]
+      VALUE_PARAMETER name:street index:0 type:kotlin.String
+      VALUE_PARAMETER name:squareMeters index:1 type:kotlin.Int
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:House modality:FINAL visibility:internal [data] superTypes:[kotlin.Any; com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>]'
+    PROPERTY name:street visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'street: kotlin.String declared in com.javiersc.kotlin.kopy.playground.House.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-street> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:street visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-street> (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.House'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.<get-street>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+    PROPERTY name:squareMeters visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'squareMeters: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House.<init>' type=kotlin.Int origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-squareMeters> visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.Int
+        correspondingProperty: PROPERTY name:squareMeters visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-squareMeters> (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.<get-squareMeters>' type=com.javiersc.kotlin.kopy.playground.House origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component1 visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.String [operator]
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component1 (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.House'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.component1' type=com.javiersc.kotlin.kopy.playground.House origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component2 visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.Int [operator]
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component2 (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+            receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.component2' type=com.javiersc.kotlin.kopy.playground.House origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:copy visibility:public modality:FINAL <> ($this:com.javiersc.kotlin.kopy.playground.House, street:kotlin.String, squareMeters:kotlin.Int) returnType:com.javiersc.kotlin.kopy.playground.House
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      VALUE_PARAMETER name:street index:0 type:kotlin.String
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.copy' type=com.javiersc.kotlin.kopy.playground.House origin=null
+      VALUE_PARAMETER name:squareMeters index:1 type:kotlin.Int
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+            receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.copy' type=com.javiersc.kotlin.kopy.playground.House origin=null
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun copy (street: kotlin.String, squareMeters: kotlin.Int): com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House'
+          CONSTRUCTOR_CALL 'public constructor <init> (street: kotlin.String, squareMeters: kotlin.Int) declared in com.javiersc.kotlin.kopy.playground.House' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            street: GET_VAR 'street: kotlin.String declared in com.javiersc.kotlin.kopy.playground.House.copy' type=kotlin.String origin=null
+            squareMeters: GET_VAR 'squareMeters: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House.copy' type=kotlin.Int origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.String
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in com.javiersc.kotlin.kopy.playground.House'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="House("
+            CONST String type=kotlin.String value="street="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.toString' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="squareMeters="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.toString' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            CONST String type=kotlin.String value=")"
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:com.javiersc.kotlin.kopy.playground.House) returnType:kotlin.Int
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      BLOCK_BODY
+        VAR name:result type:kotlin.Int [var]
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.String' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.hashCode' type=com.javiersc.kotlin.kopy.playground.House origin=null
+        SET_VAR 'var result: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House.hashCode' type=kotlin.Unit origin=EQ
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_VAR 'var result: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House.hashCode' type=kotlin.Int origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.hashCode' type=com.javiersc.kotlin.kopy.playground.House origin=null
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House'
+          GET_VAR 'var result: kotlin.Int declared in com.javiersc.kotlin.kopy.playground.House.hashCode' type=kotlin.Int origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:com.javiersc.kotlin.kopy.playground.House, other:kotlin.Any?) returnType:kotlin.Boolean [operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.playground.House
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.equals' type=com.javiersc.kotlin.kopy.playground.House origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in com.javiersc.kotlin.kopy.playground.House.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.House'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=com.javiersc.kotlin.kopy.playground.House
+              GET_VAR 'other: kotlin.Any? declared in com.javiersc.kotlin.kopy.playground.House.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.House'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:com.javiersc.kotlin.kopy.playground.House [val]
+          TYPE_OP type=com.javiersc.kotlin.kopy.playground.House origin=CAST typeOperand=com.javiersc.kotlin.kopy.playground.House
+            GET_VAR 'other: kotlin.Any? declared in com.javiersc.kotlin.kopy.playground.House.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.equals' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:street type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.equals' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.House'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.equals' type=com.javiersc.kotlin.kopy.playground.House origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:squareMeters type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_1: com.javiersc.kotlin.kopy.playground.House declared in com.javiersc.kotlin.kopy.playground.House.equals' type=com.javiersc.kotlin.kopy.playground.House origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.House'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in com.javiersc.kotlin.kopy.playground.House'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN FAKE_OVERRIDE name:copy visibility:public modality:OPEN <> ($this:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>, kopy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.House [fake_override,infix]
+      annotations:
+        KopyFunctionInvoke
+      overridden:
+        public open fun copy (kopy: @[ExtensionFunctionType] kotlin.Function1<T of com.javiersc.kotlin.kopy.runtime.Kopyable, kotlin.Unit>): T of com.javiersc.kotlin.kopy.runtime.Kopyable declared in com.javiersc.kotlin.kopy.runtime.Kopyable
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>
+      VALUE_PARAMETER name:kopy index:0 type:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>
+    FUN FAKE_OVERRIDE name:invoke visibility:public modality:OPEN <> ($this:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>, kopy:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>) returnType:com.javiersc.kotlin.kopy.playground.House [fake_override,operator,infix]
+      annotations:
+        KopyFunctionInvoke
+      overridden:
+        public open fun invoke (kopy: @[ExtensionFunctionType] kotlin.Function1<T of com.javiersc.kotlin.kopy.runtime.Kopyable, kotlin.Unit>): T of com.javiersc.kotlin.kopy.runtime.Kopyable declared in com.javiersc.kotlin.kopy.runtime.Kopyable
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>
+      VALUE_PARAMETER name:kopy index:0 type:@[ExtensionFunctionType] kotlin.Function1<com.javiersc.kotlin.kopy.playground.House, kotlin.Unit>
+    FUN FAKE_OVERRIDE name:set visibility:public modality:OPEN <R> ($this:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>, $receiver:R of com.javiersc.kotlin.kopy.playground.House.set, other:R of com.javiersc.kotlin.kopy.playground.House.set) returnType:R of com.javiersc.kotlin.kopy.playground.House.set [fake_override,infix]
+      annotations:
+        KopyFunctionSet
+      overridden:
+        public open fun set <R> (other: R of com.javiersc.kotlin.kopy.runtime.Kopyable.set): R of com.javiersc.kotlin.kopy.runtime.Kopyable.set declared in com.javiersc.kotlin.kopy.runtime.Kopyable
+      TYPE_PARAMETER name:R index:0 variance: superTypes:[kotlin.Any?] reified:false
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>
+      $receiver: VALUE_PARAMETER name:<this> type:R of com.javiersc.kotlin.kopy.playground.House.set
+      VALUE_PARAMETER name:other index:0 type:R of com.javiersc.kotlin.kopy.playground.House.set
+    FUN FAKE_OVERRIDE name:update visibility:public modality:OPEN <R> ($this:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>, $receiver:R of com.javiersc.kotlin.kopy.playground.House.update, other:kotlin.Function1<R of com.javiersc.kotlin.kopy.playground.House.update, R of com.javiersc.kotlin.kopy.playground.House.update>) returnType:R of com.javiersc.kotlin.kopy.playground.House.update [fake_override,infix]
+      annotations:
+        KopyFunctionUpdate
+      overridden:
+        public open fun update <R> (other: kotlin.Function1<R of com.javiersc.kotlin.kopy.runtime.Kopyable.update, R of com.javiersc.kotlin.kopy.runtime.Kopyable.update>): R of com.javiersc.kotlin.kopy.runtime.Kopyable.update declared in com.javiersc.kotlin.kopy.runtime.Kopyable
+      TYPE_PARAMETER name:R index:0 variance: superTypes:[kotlin.Any?] reified:false
+      $this: VALUE_PARAMETER name:<this> type:com.javiersc.kotlin.kopy.runtime.Kopyable<com.javiersc.kotlin.kopy.playground.House>
+      $receiver: VALUE_PARAMETER name:<this> type:R of com.javiersc.kotlin.kopy.playground.House.update
+      VALUE_PARAMETER name:other index:0 type:kotlin.Function1<R of com.javiersc.kotlin.kopy.playground.House.update, R of com.javiersc.kotlin.kopy.playground.House.update>
+FILE fqName:<root> fileName:/SomeFile.kt
diff --git a/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.txt b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.txt
new file mode 100644
index 0000000..7ca31d7
--- /dev/null
+++ b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.fir.txt
@@ -0,0 +1,49 @@
+FILE: no-nest-invoke-update-with-it.kt
+    package com.javiersc.kotlin.kopy.playground
+
+    public final fun box(): R|kotlin/String| {
+        lval house0: R|com/javiersc/kotlin/kopy/playground/House| = R|com/javiersc/kotlin/kopy/playground/House.House|(street = String(Street), squareMeters = Int(20))
+        lval house1: R|com/javiersc/kotlin/kopy/playground/House| = R|<local>/house0|.R|SubstitutionOverride<com/javiersc/kotlin/kopy/playground/House.invoke: R|com/javiersc/kotlin/kopy/playground/House|>|(<L> = house0@fun R|com/javiersc/kotlin/kopy/playground/House|.<anonymous>(): R|kotlin/Unit| <inline=NoInline>  {
+            (this@R|special/anonymous|, this@R|special/anonymous|.R|com/javiersc/kotlin/kopy/playground/House.squareMeters|).R|SubstitutionOverride<com/javiersc/kotlin/kopy/playground/House.update: R|R|>|<R|kotlin/Int|>(<L> = update@fun <anonymous>(it: R|kotlin/Int|): R|kotlin/Int| <inline=NoInline>  {
+                ^ R|<local>/it|.R|kotlin/Int.plus|(Int(20))
+            }
+            )
+        }
+        )
+        lval house2: R|com/javiersc/kotlin/kopy/playground/House| = R|<local>/house0|.R|kotlin/run|<R|com/javiersc/kotlin/kopy/playground/House|, R|com/javiersc/kotlin/kopy/playground/House|>(<L> = run@fun R|com/javiersc/kotlin/kopy/playground/House|.<anonymous>(): R|com/javiersc/kotlin/kopy/playground/House| <inline=Inline, kind=EXACTLY_ONCE>  {
+            lvar tmp0: R|com/javiersc/kotlin/kopy/playground/House| = this@R|special/anonymous|
+            R|<local>/tmp0| = R|<local>/tmp0|.R|com/javiersc/kotlin/kopy/playground/House.copy|(squareMeters = R|<local>/tmp0|.R|com/javiersc/kotlin/kopy/playground/House.squareMeters|.R|kotlin/let|<R|kotlin/Int|, R|kotlin/Int|>(<L> = let@fun <anonymous>(it: R|kotlin/Int|): R|kotlin/Int| <inline=Inline, kind=EXACTLY_ONCE>  {
+                ^ R|<local>/it|.R|kotlin/Int.plus|(Int(20))
+            }
+            ))
+            ^ R|<local>/tmp0|
+        }
+        )
+        ^box when () {
+            ==(R|<local>/house1|, R|<local>/house2|) ->  {
+                String(OK)
+            }
+            else ->  {
+                <strcat>(String(Fail: ), Char(10), String(House1: ), R|<local>/house1|, String( ), Char(10), String(House2: ), R|<local>/house2|)
+            }
+        }
+
+    }
+    @R|com/javiersc/kotlin/kopy/Kopy|() internal final data class House : R|kotlin/Any|, R|com/javiersc/kotlin/kopy/runtime/Kopyable<com/javiersc/kotlin/kopy/playground/House>| {
+        public constructor(street: R|kotlin/String|, squareMeters: R|kotlin/Int|): R|com/javiersc/kotlin/kopy/playground/House| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final val street: R|kotlin/String| = R|<local>/street|
+            public get(): R|kotlin/String|
+
+        public final val squareMeters: R|kotlin/Int| = R|<local>/squareMeters|
+            public get(): R|kotlin/Int|
+
+        public final operator fun component1(): R|kotlin/String|
+
+        public final operator fun component2(): R|kotlin/Int|
+
+        public final fun copy(street: R|kotlin/String| = this@R|com/javiersc/kotlin/kopy/playground/House|.R|com/javiersc/kotlin/kopy/playground/House.street|, squareMeters: R|kotlin/Int| = this@R|com/javiersc/kotlin/kopy/playground/House|.R|com/javiersc/kotlin/kopy/playground/House.squareMeters|): R|com/javiersc/kotlin/kopy/playground/House|
+
+    }
diff --git a/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.kt b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.kt
new file mode 100644
index 0000000..3724de7
--- /dev/null
+++ b/kopy-compiler/test-data/box/no-nest-invoke-update-with-it.kt
@@ -0,0 +1,19 @@
+// !DIAGNOSTICS: -MISSING_DEPENDENCY_SUPERCLASS
+
+package com.javiersc.kotlin.kopy.playground
+
+import com.javiersc.kotlin.kopy.Kopy
+
+fun box(): String {
+    val house0 = House(street = "Street", squareMeters = 20)
+    val house1 = house0 { squareMeters.update { it + 20 } }
+    val house2 =
+        house0.run {
+            var tmp0 = this
+            tmp0 = tmp0.copy(squareMeters = tmp0.squareMeters.let { it + 20 })
+            tmp0
+        }
+    return if (house1 == house2) "OK" else "Fail: \nHouse1: $house1 \nHouse2: $house2"
+}
+
+@Kopy internal data class House(val street: String, val squareMeters: Int)
diff --git a/kopy-compiler/test-gen/java/com/javiersc/kotlin/kopy/compiler/BoxTestGenerated.java b/kopy-compiler/test-gen/java/com/javiersc/kotlin/kopy/compiler/BoxTestGenerated.java
index 6c6fad3..1ddfcc4 100644
--- a/kopy-compiler/test-gen/java/com/javiersc/kotlin/kopy/compiler/BoxTestGenerated.java
+++ b/kopy-compiler/test-gen/java/com/javiersc/kotlin/kopy/compiler/BoxTestGenerated.java
@@ -33,4 +33,10 @@ public void testNo_nest_copy_update_no_it() throws Exception {
     public void testNo_nest_invoke_update_no_it() throws Exception {
         runTest("test-data/box/no-nest-invoke-update-no-it.kt");
     }
+
+    @Test
+    @TestMetadata("no-nest-invoke-update-with-it.kt")
+    public void testNo_nest_invoke_update_with_it() throws Exception {
+        runTest("test-data/box/no-nest-invoke-update-with-it.kt");
+    }
 }
diff --git a/kopy-runtime/main/kotlin/com/javiersc/kotlin/kopy/runtime/delete/Delete.kt b/kopy-runtime/main/kotlin/com/javiersc/kotlin/kopy/runtime/delete/Delete.kt
index c0ce66d..719a8de 100644
--- a/kopy-runtime/main/kotlin/com/javiersc/kotlin/kopy/runtime/delete/Delete.kt
+++ b/kopy-runtime/main/kotlin/com/javiersc/kotlin/kopy/runtime/delete/Delete.kt
@@ -5,14 +5,14 @@ import com.javiersc.kotlin.kopy.runtime.Kopyable
 
 internal fun box(): String {
     val house0 = House(street = "Street", squareMeters = 20)
-    val house1 = house0 { squareMeters.update { 40 } }
+    val house1 = house0 { squareMeters.update { it + 20 } }
     val house2 =
         house0.run {
-            var tmp1 = this
-            tmp1 = tmp1.copy(squareMeters = tmp1.squareMeters.let { 40 })
-            tmp1
+            var tmp0 = this
+            tmp0 = tmp0.copy(squareMeters = tmp0.squareMeters.let { it + 20 })
+            tmp0
         }
-    return if (house1 == house2) "OK" else "ERROR"
+    return if (house1 == house2) "OK" else "Fail: \nHouse1: $house1 \nHouse2: $house2"
 }
 
 @Kopy internal data class House(val street: String, val squareMeters: Int) : Kopyable<House>