diff --git a/mp3lib/dct64_altivec.c b/mp3lib/dct64_altivec.c
index 8ff50666f6..c2501f8ebc 100644
--- a/mp3lib/dct64_altivec.c
+++ b/mp3lib/dct64_altivec.c
@@ -3,6 +3,8 @@
  * Discrete Cosine Tansform (DCT) for Altivec
  * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org>
  * based upon code from "mp3lib/dct64.c"
+ * This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
  */
 
 #define real float