1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/libc/net/inet_network.c b/src/lib/libc/net/inet_network.c
index ef8f21b280..7b0cf50e79 100644
--- a/src/lib/libc/net/inet_network.c
+++ b/src/lib/libc/net/inet_network.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: inet_network.c,v 1.12 2015/09/13 21:36:08 guenther Exp $ */
+/*      $OpenBSD: inet_network.c,v 1.13 2015/10/22 23:55:51 mmcc Exp $ */
 /*
  * Copyright (c) 1983, 1993
  *      The Regents of the University of California.  All rights reserved.
@@ -71,7 +71,7 @@ again:
                 *pp++ = val, cp++;
                 goto again;
         }
-        if (*cp && !isspace(*cp))
+        if (*cp && !isspace((unsigned char)*cp))
                 return (INADDR_NONE);
         *pp++ = val;
         n = pp - parts;