diff --git a/lib/zassert.h b/lib/zassert.h
index 7912676..bf0a851 100644
--- a/lib/zassert.h
+++ b/lib/zassert.h
@@ -1,5 +1,22 @@
 /*
  * $Id: zassert.h,v 1.2 2004/12/03 18:01:04 ajs Exp $
+ *
+ * This file is part of Quagga.
+ *
+ * Quagga 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, or (at your option) any
+ * later version.
+ *
+ * Quagga is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Quagga; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
  */
 
 #ifndef _QUAGGA_ASSERT_H