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-rw-r--r--src/fl2k_fm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/fl2k_fm.c b/src/fl2k_fm.c
index 74953ab..0b2dd28 100644
--- a/src/fl2k_fm.c
+++ b/src/fl2k_fm.c
@@ -7,6 +7,8 @@
* based on FM modulator code from VGASIG:
* Copyright (C) 2009 by Bartek Kania <mbk@gnarf.org>
*
+ * 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