diff --git a/usr.bin/locale/locale.c b/usr.bin/locale/locale.c
index 2c3e61eb529..de31eac9497 100644
--- a/usr.bin/locale/locale.c
+++ b/usr.bin/locale/locale.c
@@ -40,6 +40,7 @@
 
 #include <dirent.h>
 #include <err.h>
+#include <limits.h>
 #include <locale.h>
 #include <langinfo.h>
 #include <stdio.h>