diff --git a/reactos/lib/atl/atlwin.h b/reactos/lib/atl/atlwin.h
index 3d4b344018e..fa5550e38c8 100644
--- a/reactos/lib/atl/atlwin.h
+++ b/reactos/lib/atl/atlwin.h
@@ -24,7 +24,7 @@
 #define GCCU(x)	x __attribute__((unused))
 #define Unused(x)
 #else
-#define GCCU(x)
+#define GCCU(x) (x) 
 #define Unused(x)	(x);
 #endif // __GNUC__