diff --git a/bpm-graph b/bpm-graph
index 1dc3a80..b068289 100755
--- a/bpm-graph
+++ b/bpm-graph
@@ -1,4 +1,22 @@
 #!/bin/sh
+#
+# Copyright (C) 2012 Mark Hills <mark@pogo.org.uk>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# version 2, as published by the Free Software Foundation.
+#
+# This program 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 version 2 for more details.
+#
+# You should have received a copy of the GNU General Public License
+# version 2 along with this program; if not, write to the Free
+# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA 02110-1301, USA.
+#
+
 #
 # View graph of BPM analysis
 #