diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index c731b7c..85260bc 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -7,6 +7,8 @@
  * 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 OsmoBSC while emulating both multiple BTS + MS as
  * well as the MSC. See README for more details.
  *