diff --git a/clang/lib/Headers/__stddef_null.h b/clang/lib/Headers/__stddef_null.h
--- a/clang/lib/Headers/__stddef_null.h
+++ b/clang/lib/Headers/__stddef_null.h
@@ -15,5 +15,5 @@
 #define NULL 0
 #endif
 #else
-#define NULL ((void *)0)
+#define NULL ((void*)0)
 #endif