diff --git a/filter/impl/generic_service_filter.go b/filter/impl/generic_service_filter.go
index fb2b90138984fdb7f6d39b4dc381ba38c61dae26..9edbf284c9f036bd5fe658ae37cebdf499a9a4d4 100644
--- a/filter/impl/generic_service_filter.go
+++ b/filter/impl/generic_service_filter.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 impl
 
 import (
diff --git a/filter/impl/generic_service_filter_test.go b/filter/impl/generic_service_filter_test.go
index 6a73305f8bf0d327e1a2d93511b5acd177b003c9..89898694c267ad5a84814651b16d3ff9bcfc871a 100644
--- a/filter/impl/generic_service_filter_test.go
+++ b/filter/impl/generic_service_filter_test.go
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 impl
 
 import (