===================================================================
RCS file: /cvs/mandoc/cgi.c,v
retrieving revision 1.88
retrieving revision 1.89
diff -u -p -r1.88 -r1.89
--- mandoc/cgi.c	2014/07/25 18:20:39	1.88
+++ mandoc/cgi.c	2014/07/25 19:37:34	1.89
@@ -1,4 +1,4 @@
-/*	$Id: cgi.c,v 1.88 2014/07/25 18:20:39 schwarze Exp $ */
+/*	$Id: cgi.c,v 1.89 2014/07/25 19:37:34 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014 Ingo Schwarze <schwarze@usta.de>
@@ -1086,7 +1086,8 @@ main(void)
 	if (NULL != (querystring = getenv("QUERY_STRING")))
 		http_parse(&req, querystring);
 
-	if ( ! validate_manpath(&req, req.q.manpath)) {
+	if ( ! (NULL == req.q.manpath ||
+	    validate_manpath(&req, req.q.manpath))) {
 		pg_error_badrequest(
 		    "You specified an invalid manpath.");
 		return(EXIT_FAILURE);