diff --git a/usr.bin/who/who.c b/usr.bin/who/who.c
index 77a131cb0375..306088180a73 100644
--- a/usr.bin/who/who.c
+++ b/usr.bin/who/who.c
@@ -50,6 +50,7 @@ static char sccsid[] = "@(#)who.c	8.1 (Berkeley) 6/6/93";
 #include <pwd.h>
 #include <utmp.h>
 #include <stdio.h>
+#include <locale.h>
 
 main(argc, argv)
 	int argc;
@@ -61,6 +62,8 @@ main(argc, argv)
 	FILE *ufp, *file();
 	char *t, *rindex(), *strcpy(), *strncpy(), *ttyname();
 
+	(void) setlocale(LC_TIME, "");
+
 	switch (argc) {
 	case 1:					/* who */
 		ufp = file(_PATH_UTMP);