diff --git a/TestON/core/graph.py b/TestON/core/graph.py
index e8c8a7a..b1cbdb2 100644
--- a/TestON/core/graph.py
+++ b/TestON/core/graph.py
@@ -1,11 +1,26 @@
 #!/usr/bin/env python
-"""
-Created 2016 by ON.Lab
+
+'''
+Copyright 2016 Open Networking Foundation (ONF)
 
 Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
 the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
 or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg>
-"""
+
+    TestON is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TestON is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with TestON.  If not, see <http://www.gnu.org/licenses/>.
+
+'''
 
 
 import time