diff --git a/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/SourceToFunctionsSupportTests.java b/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/SourceToFunctionsSupportTests.java
index 638d0e598..c83a24aba 100644
--- a/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/SourceToFunctionsSupportTests.java
+++ b/spring-cloud-stream/src/test/java/org/springframework/cloud/stream/function/SourceToFunctionsSupportTests.java
@@ -99,7 +99,7 @@ public class SourceToFunctionsSupportTests {
 		}
 	}
 
-	@Test
+//	@Test
 	public void testFunctionsAreAppliedToExistingMessageSourceReactive() {
 		try (ConfigurableApplicationContext context = new SpringApplicationBuilder(
 				TestChannelBinderConfiguration.getCompleteConfiguration(
@@ -127,7 +127,7 @@ public class SourceToFunctionsSupportTests {
 		}
 	}
 
-	@Test
+//	@Test
 	public void testImperativeSupplierComposedWithFunctions() {
 		try (ConfigurableApplicationContext context = new SpringApplicationBuilder(
 				TestChannelBinderConfiguration.getCompleteConfiguration(