diff --git a/lib/libc/locale/mblen.c b/lib/libc/locale/mblen.c
index 65d0aa7c478f..4a2cc5cbcde8 100644
--- a/lib/libc/locale/mblen.c
+++ b/lib/libc/locale/mblen.c
@@ -27,8 +27,6 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <errno.h>
-#include <limits.h>
 #include <stdlib.h>
 #include <wchar.h>
 #include "mblocal.h"
diff --git a/lib/libc/locale/mbtowc.c b/lib/libc/locale/mbtowc.c
index 8ee280aa2b05..ad5b73525635 100644
--- a/lib/libc/locale/mbtowc.c
+++ b/lib/libc/locale/mbtowc.c
@@ -27,10 +27,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <errno.h>
-#include <limits.h>
 #include <stdlib.h>
-#include <string.h>
 #include <wchar.h>
 #include "mblocal.h"
 
diff --git a/lib/libc/locale/wctomb.c b/lib/libc/locale/wctomb.c
index d9c607e69760..77b9043d61e1 100644
--- a/lib/libc/locale/wctomb.c
+++ b/lib/libc/locale/wctomb.c
@@ -27,10 +27,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#include <errno.h>
-#include <limits.h>
 #include <stdlib.h>
-#include <string.h>
 #include <wchar.h>
 #include "mblocal.h"