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 c1b4dbe9d..8b09fb586 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
@@ -263,8 +263,8 @@ public class ImplicitFunctionBindingTests {
 			Message<byte[]> inputMessage = MessageBuilder.withPayload("Hello".getBytes()).build();
 			inputDestination.send(inputMessage);
 
-			Message outputMessage = outputDestination.receive();
-			assertThat(outputMessage.getPayload()).isEqualTo("Hello");
+			Message<byte[]> outputMessage = outputDestination.receive();
+			assertThat(outputMessage.getPayload()).isEqualTo("Hello".getBytes());
 
 		}
 	}