diff --git a/match.c b/match.c
index a7585e2bd..3cf40306b 100644
--- a/match.c
+++ b/match.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: match.c,v 1.36 2017/03/10 03:52:48 djm Exp $ */
+/* $OpenBSD: match.c,v 1.37 2017/03/10 04:24:55 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -42,9 +42,11 @@
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
+#include <stdio.h>
 
 #include "xmalloc.h"
 #include "match.h"
+#include "misc.h"
 
 /*
  * Returns true if the given string matches the pattern (which may contain ?
@@ -177,7 +179,13 @@ match_pattern_list(const char *string, const char *pattern, int dolower)
 int
 match_hostname(const char *host, const char *pattern)
 {
-	return match_pattern_list(host, pattern, 1);
+	char *hostcopy = xstrdup(host);
+	int r;
+
+	lowercase(hostcopy);
+	r = match_pattern_list(hostcopy, pattern, 1);
+	free(hostcopy);
+	return r;
 }
 
 /*