diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index d0ad3e62..d04f1601 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -25,6 +25,11 @@ LICENSE
 
   You should have received a copy of the GNU General Public License
   along with revid in gpl.txt.  If not, see http://www.gnu.org/licenses.
+
+	Derived from librtmp under the GNU Lesser General Public License 2.1
+	Copyright (C) 2005-2008 Team XBMC http://www.xbmc.org
+	Copyright (C) 2008-2009 Andrej Stepanchuk
+	Copyright (C) 2009-2010 Howard Chu
 */
 
 package rtmp