diff --git a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/CoreLib/hsTypes.h b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/CoreLib/hsTypes.h
index a47fd194..4bea32f4 100644
--- a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/CoreLib/hsTypes.h
+++ b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/CoreLib/hsTypes.h
@@ -317,6 +317,10 @@ typedef hsColor32 hsRGBAColor32;
 
 #define  REF(a)  ((void *)&(a))
 
+#if _MSC_VER < 1400
+// For compatibility only, deprecated - use REF instead
+#define ref(a) REF(a)
+#endif
 
 /****************************************************************************
 *