--- libaitwww/src/tools.c	2012/07/31 23:08:40	1.2.6.3
+++ libaitwww/src/tools.c	2012/07/31 23:11:47	1.2.6.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: tools.c,v 1.2.6.3 2012/07/31 23:08:40 misho Exp $
+* $Id: tools.c,v 1.2.6.4 2012/07/31 23:11:47 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -162,7 +162,8 @@ www_unescape(char * __restrict str)
 {
 	register int i, j;
 
-	assert(str);
+	if (!str)
+		return;
 
 	for (i = j = 0; str[j]; i++, j++) {
 		str[i] = str[j];