--- libaitwww/src/aitwww.c	2012/07/31 22:59:33	1.3.4.2
+++ libaitwww/src/aitwww.c	2012/08/01 00:40:41	1.4
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: aitwww.c,v 1.3.4.2 2012/07/31 22:59:33 misho Exp $
+* $Id: aitwww.c,v 1.4 2012/08/01 00:40:41 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -460,7 +460,7 @@ addAttr(const char **ct)
 		return NULL;
 	else
 		c++;
-	while (isspace(*c))
+	while (isspace((int) *c))
 		c++;
 
 	if (!(eq = strchr(c, '=')))