diff --git a/BeefySysLib/BFWindow.h b/BeefySysLib/BFWindow.h
index 81e21e3f..5196dcdf 100644
--- a/BeefySysLib/BFWindow.h
+++ b/BeefySysLib/BFWindow.h
@@ -56,7 +56,8 @@ enum
 	BFWINDOW_SHOWMAXIMIZED  = 0x4000000,
 	BFWINDOW_ALLOW_FULLSCREEN = 0x8000000,
 	BFWINDOW_ACCEPTFILES	= 0x10000000,
-	BFWINDOW_NOSHOW			= 0x20000000
+	BFWINDOW_NOSHOW			= 0x20000000,
+	BFWINDOW_NO_MOUSE       = 0x40000000
 
 };