diff --git a/compose/ponsim_onu.yml b/compose/ponsim_onu.yml
index 7462f11..216df56 100644
--- a/compose/ponsim_onu.yml
+++ b/compose/ponsim_onu.yml
@@ -1,3 +1,18 @@
+---
+# Copyright 2018 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.
+
 version: '2'
 services:
   ponsim_onu:
@@ -28,4 +43,4 @@
 
 networks:
   default:
-    driver: bridge
\ No newline at end of file
+    driver: bridge