diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 5cde0af..1c20657 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -1,13 +1,15 @@
 module BTS_Tests {
 
 /* Integration Tests for OsmoBTS
- * (C) 2019-2019 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2018-2019 by Harald Welte <laforge@gnumonks.org>
  * contributions by Vadim Yanitskiy and sysmocom - s.f.m.c. GmbH
  * 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
+ *
  * This test suite tests OsmoBTS by attaching to the external interfaces
  * such as Abis RSL, PCU, VTY as well as by attaching to a MS L1 implementation
  * using the L1CTL protocol/interface.