diff --git a/usr.bin/split/split.c b/usr.bin/split/split.c
index c49a1de77a41..ca3847c5c965 100644
--- a/usr.bin/split/split.c
+++ b/usr.bin/split/split.c
@@ -52,6 +52,7 @@ static const char sccsid[] = "@(#)split.c	8.2 (Berkeley) 4/16/94";
 #include <fcntl.h>
 #include <inttypes.h>
 #include <limits.h>
+#include <locale.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -85,6 +86,8 @@ main(int argc, char **argv)
 	int ch;
 	char *ep, *p;
 
+	setlocale(LC_ALL, "");
+
 	while ((ch = getopt(argc, argv, "-0123456789a:b:l:p:")) != -1)
 		switch (ch) {
 		case '0': case '1': case '2': case '3': case '4':