diff --git a/include/polarssl/bignum.h b/include/polarssl/bignum.h
index 417f560..80399a2 100644
--- a/include/polarssl/bignum.h
+++ b/include/polarssl/bignum.h
@@ -2,7 +2,10 @@
  * \file bignum.h
  *
  *  Copyright (C) 2006-2010, Brainspark B.V.
+ *
+ *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
  *  All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify