--- libelwix/src/json.c	2018/06/26 14:39:13	1.7
+++ libelwix/src/json.c	2019/01/31 22:19:46	1.7.12.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: json.c,v 1.7 2018/06/26 14:39:13 misho Exp $
+* $Id: json.c,v 1.7.12.1 2019/01/31 22:19:46 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -12,7 +12,7 @@ terms:
 All of the documentation and software included in the ELWIX and AITNET
 Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
 
-Copyright 2004 - 2018
+Copyright 2004 - 2019
 	by Michael Pounov <misho@elwix.org>.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -224,7 +224,7 @@ json_parse_value(json_t * __restrict json, const char 
 			case '}':
 				goto found;
 		}
-		if (jstr[json->h_pos] < 32 || jstr[json->h_pos] > 127) {
+		if (jstr[json->h_pos] < 32 || (u_char) jstr[json->h_pos] > 127) {
 			json->h_pos = pos;
 			elwix_SetErr(J_ERR_INVAL, "%s", jerrstr[J_ERR_INVAL]);
 			return -1;