diff --git a/test/evm/individual-opcodes.test.ts b/test/evm/individual-opcodes.test.ts
index 7455100..0c4516d 100644
--- a/test/evm/individual-opcodes.test.ts
+++ b/test/evm/individual-opcodes.test.ts
@@ -494,6 +494,22 @@ describe('Individual OpCodes', () => {
         },
     )
 
+    it.e2eTest(
+        'should give the correct output for opcode: BASEFEE',
+        'all',
+        async () => {
+            const debugged = await traceContractCall(
+                opcodesInterface.encodeFunctionData('BASEFEE'),
+                'BASEFEE',
+                true,
+            )
+
+            expect(
+                debugged.structLogs[debugged.structLogs.length - 1].error,
+            ).toBe('invalid opcode 0x48')
+        },
+    )
+
     it.e2eTest(
         'should give the correct output for opcode: INVALID',
         'all',
@@ -567,4 +583,26 @@ describe('Individual OpCodes', () => {
             expect(simulation.body?.[0]?.vmError).toEqual('invalid opcode 0x5f')
         },
     )
+
+    it.e2eTest(
+        'should be possible to deploy contract starting with 0xEF',
+        'all',
+        async () => {
+            const contractBytecode = '0x60ef60005360016000f3'
+            const clauses = [
+                {
+                    to: null,
+                    value: '0x0',
+                    data: contractBytecode,
+                },
+            ]
+
+            const simulation = await Client.raw.executeAccountBatch({
+                clauses,
+                caller,
+            })
+
+            expect(simulation.body?.[0]?.vmError).toBeEmpty()
+        },
+    )
 })