diff --git a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Processor.java b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Processor.java
index d24c7aa41..5a911ccbe 100644
--- a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Processor.java
+++ b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Processor.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.cloud.stream.annotation;
 
 public interface Processor extends Source, Sink {
diff --git a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Sink.java b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Sink.java
index 37774ee71..4c2d3491e 100644
--- a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Sink.java
+++ b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Sink.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.cloud.stream.annotation;
 
 import org.springframework.messaging.SubscribableChannel;
diff --git a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Source.java b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Source.java
index 419924fee..9a572a0d0 100644
--- a/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Source.java
+++ b/spring-cloud-stream/src/main/java/org/springframework/cloud/stream/annotation/Source.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.cloud.stream.annotation;
 
 import org.springframework.messaging.MessageChannel;
@@ -10,6 +26,3 @@ public interface Source {
 	MessageChannel output();
 
 }
-
-	
-	
\ No newline at end of file