diff --git a/mesh_bsurfaces.py b/mesh_bsurfaces.py
index 7fa92a4f02367003b9d038aaaad707163e99f3e0..ef2a88c819ec11d85ea806b61054239672e35666 100644
--- a/mesh_bsurfaces.py
+++ b/mesh_bsurfaces.py
@@ -2,8 +2,8 @@
 #
 #  This program 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; version 2
-#  of the License.
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
 #
 #  This program is distributed in the hope that it will be useful,
 #  but WITHOUT ANY WARRANTY; without even the implied warranty of