diff --git a/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/ImplicitFunctionBindingTests.java b/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/ImplicitFunctionBindingTests.java
index 8e735c7d9..e42010cf5 100644
--- a/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/ImplicitFunctionBindingTests.java
+++ b/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/ImplicitFunctionBindingTests.java
@@ -1493,7 +1493,7 @@ public class ImplicitFunctionBindingTests {
 			return new FunctionAroundWrapper() {
 
 				@Override
-				protected Object doApply(Message<byte[]> input,
+				protected Object doApply(Object input,
 						FunctionInvocationWrapper targetFunction) {
 					return targetFunction.apply(input);
 				}