Revised copyright message.
diff --git a/docs/src/main/javadoc/overview.html b/docs/src/main/javadoc/overview.html
index f50f24d..501a0ef 100644
--- a/docs/src/main/javadoc/overview.html
+++ b/docs/src/main/javadoc/overview.html
@@ -1,3 +1,18 @@
+<!--
+ ~ Copyright 2014 Open Networking Laboratory
+ ~
+ ~ 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.
+ -->
<html>
<body>
<p>