diff --git a/fs2-aws-sqs/src/main/scala/fs2/aws/sqs/SqsConfig.scala b/fs2-aws-sqs/src/main/scala/fs2/aws/sqs/SqsConfig.scala
index ee28c05f..be902a12 100644
--- a/fs2-aws-sqs/src/main/scala/fs2/aws/sqs/SqsConfig.scala
+++ b/fs2-aws-sqs/src/main/scala/fs2/aws/sqs/SqsConfig.scala
@@ -5,10 +5,10 @@ import scala.concurrent.duration._
 import scala.jdk.CollectionConverters._
 
 case class SqsConfig(
-  override queueUrl: String,
-  override pollRate: FiniteDuration = 3.seconds,
-  override fetchMessageCount: Int = 100,
-  override messageAttributeNames: List[String] = Nil,
+  override val queueUrl: String,
+  override val pollRate: FiniteDuration = 3.seconds,
+  override val fetchMessageCount: Int = 100,
+  override val messageAttributeNames: List[String] = Nil,
 ) extends SqsConfig.Interface
 
 object SqsConfig {