diff --git a/sha256.c b/sha256.c
index fa32971b38ba72b678591f1a9183ed12f6ff86ce..6b8cfbc9024891512899a8061c6ddf01904983d8 100644
--- a/sha256.c
+++ b/sha256.c
@@ -9,10 +9,10 @@
  *
  * Copyright (C) 2001 Niels Möller
  *  
- * 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 (at your option) any later version.
+ * The nettle library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at your
+ * option) any later version.
  *
  * The nettle library is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY