diff --git a/headers/posix/uchar.h b/headers/posix/uchar.h
index 8a22d39b68..461b87b2db 100644
--- a/headers/posix/uchar.h
+++ b/headers/posix/uchar.h
@@ -6,6 +6,7 @@
 #define _UCHAR_H
 
 
+#include <stdint.h>
 #include <wchar.h>