Index: uspace/lib/c/include/stddef.h
===================================================================
--- uspace/lib/c/include/stddef.h	(revision 002fd5f375765c45f5e59bbc374e1418520abddf)
+++ uspace/lib/c/include/stddef.h	(revision c9f3e7e90bf5ef1a7d8f76f8717c35a796152375)
@@ -43,7 +43,5 @@
 #include <_bits/wchar_t.h>
 
-#ifndef NULL
-	#define NULL  ((void *) 0)
-#endif
+#include <_bits/NULL.h>
 
 #define offsetof(type, member) \