===================================================================
RCS file: /cvs/mandoc/mdoc_validate.c,v
retrieving revision 1.164
retrieving revision 1.166
diff -u -p -r1.164 -r1.166
--- mandoc/mdoc_validate.c	2011/03/20 16:02:05	1.164
+++ mandoc/mdoc_validate.c	2011/04/03 09:53:50	1.166
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_validate.c,v 1.164 2011/03/20 16:02:05 kristaps Exp $ */
+/*	$Id: mdoc_validate.c,v 1.166 2011/04/03 09:53:50 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -33,6 +33,7 @@
 #include <string.h>
 #include <time.h>
 
+#include "mdoc.h"
 #include "mandoc.h"
 #include "libmdoc.h"
 #include "libmandoc.h"
@@ -2193,7 +2194,7 @@ post_os(POST_ARGS)
 			return(0);
 		}
 #else /*!OSNAME */
-		if (uname(&utsname)) {
+		if (-1 == uname(&utsname)) {
 			mdoc_nmsg(mdoc, n, MANDOCERR_UNAME);
                         mdoc->meta.os = mandoc_strdup("UNKNOWN");
                         return(post_prol(mdoc));