diff --git a/can-calc-bit-timing.c b/can-calc-bit-timing.c
index ba50cdc..36ff1e9 100644
--- a/can-calc-bit-timing.c
+++ b/can-calc-bit-timing.c
@@ -9,7 +9,10 @@
  *   Copyright 2005      Stanislav Marek
  *   email:pisa@cmp.felk.cvut.cz
  *
- *   This software is released under the GPL-License.
+ * 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
+ * any later version.
  */
 
 #include <errno.h>