1 files changed, 3 insertions, 1 deletions
diff --git a/common.c b/common.c
index 3d69dd0..748e5a4 100644
--- a/common.c
+++ b/common.c
@@ -3,7 +3,9 @@
  *
  *	Copyright (c) 1997--2016 Martin Mares <mj@ucw.cz>
  *
- *	Can be freely distributed and used under the terms of the GNU GPL.
+ *	Can be freely distributed and used under the terms of the GNU GPL v2+.
+ *
+ *	SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include <stdio.h>