diff --git a/scumm/scumm.h b/scumm/scumm.h
index 4692e5dbb40..b4bbcdac39e 100644
--- a/scumm/scumm.h
+++ b/scumm/scumm.h
@@ -1016,7 +1016,7 @@ public:
 	byte VAR_RIGHTBTN_DOWN;
 	byte VAR_LEFTBTN_HOLD;
 	byte VAR_RIGHTBTN_HOLD;
-
+	byte VAR_MOUSE_BUTTONS;
 	byte VAR_UNK_SCRIPT;
 	byte VAR_UNK_SCRIPT_2;