diff --git a/src/gb/gprs_ns_vty.c b/src/gb/gprs_ns_vty.c
index e8ef2a2..667db7d 100644
--- a/src/gb/gprs_ns_vty.c
+++ b/src/gb/gprs_ns_vty.c
@@ -1,10 +1,13 @@
 /*! \file gprs_ns_vty.c
  * VTY interface for our GPRS Networks Service (NS) implementation. */
 /*
- * (C) 2009-2010 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2009-2014 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2016-2017 by sysmocom - s.f.m.c. GmbH
  *
  * All Rights Reserved
  *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
  * 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; either version 2 of the License, or