diff --git a/library/LAPDm_RAW_PT.ttcn b/library/LAPDm_RAW_PT.ttcn
index 6b8f9fb..164d31a 100644
--- a/library/LAPDm_RAW_PT.ttcn
+++ b/library/LAPDm_RAW_PT.ttcn
@@ -1,6 +1,16 @@
 /* Test Port that stacks on top of L1CTL test port and performs LAPDm encoding/decoding, so the user can send
  * and receive LAPDm frames in decoded TTCN-3 data types.  This is particularly useful for sending/receiving
  * all kinds of hand-crafted LAPDm frames for testing of the remote LAPDm layer */
+
+/* (C) 2017-2018 Harald Welte <laforge@gnumonks.org>
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
 module LAPDm_RAW_PT {
 	import from GSM_Types all;
 	import from GSM_RR_Types all;