diff --git a/include/bits/wchar.h b/include/bits/wchar.h
index f0e2dd9a49..1619cb0fab 100644
--- a/include/bits/wchar.h
+++ b/include/bits/wchar.h
@@ -6,7 +6,9 @@
 #define WCHAR_MIN (0)
 #define WCHAR_MAX (0x7fffffff)
 
-typedef int32_t wchar_t;
-typedef uint32_t wint_t;
+#define __need_size_t
+#define __need_wchar_t
+#define __need_wint_t
+#define __need_NULL
 
 #endif /* _BITS_WCHAR_H */