diff --git a/doc/ext/cinder_autodoc.py b/doc/ext/cinder_autodoc.py
index a6b7d685394..1d49fbbe58e 100644
--- a/doc/ext/cinder_autodoc.py
+++ b/doc/ext/cinder_autodoc.py
@@ -1,3 +1,15 @@
+# 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.
+
 from __future__ import print_function
 
 import gettext