diff --git a/usr.bin/ar/ar.c b/usr.bin/ar/ar.c
index 6dbef568af1a..e1bde61efa43 100644
--- a/usr.bin/ar/ar.c
+++ b/usr.bin/ar/ar.c
@@ -54,6 +54,7 @@ static char sccsid[] = "@(#)ar.c	8.3 (Berkeley) 4/2/94";
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <locale.h>
 
 #include "archive.h"
 #include "extern.h"
@@ -79,6 +80,8 @@ main(argc, argv)
 	char *p;
 	int (*fcall) __P((char **));
 
+	(void) setlocale(LC_TIME, "");;
+
 	if (argc < 3)
 		usage();