diff --git a/src/os/macosx/osx_stdafx.h b/src/os/macosx/osx_stdafx.h
index 9c1b5b31d2..ef09fb6a9d 100644
--- a/src/os/macosx/osx_stdafx.h
+++ b/src/os/macosx/osx_stdafx.h
@@ -42,12 +42,14 @@
 #define Rect        OTTDRect
 #define Point       OTTDPoint
 #define WindowClass OTTDWindowClass
+#define ScriptOrder	OTTDScriptOrder
 
 #include <CoreServices/CoreServices.h>
 
 #undef Rect
 #undef Point
 #undef WindowClass
+#undef ScriptOrder
 
 /* remove the variables that CoreServices defines, but we define ourselves too */
 #undef bool