diff --git a/armsrc/optimized_cipher.c b/armsrc/optimized_cipher.c
index 36b25f593..223d73fea 100644
--- a/armsrc/optimized_cipher.c
+++ b/armsrc/optimized_cipher.c
@@ -22,7 +22,7 @@
  *
  * This is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
+ * by the Free Software Foundation, or, at your option, any later version. 
  *
  * This file is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of