diff --git a/src/msw/menu.cpp b/src/msw/menu.cpp
index 6022b8f679..c7790aeacd 100644
--- a/src/msw/menu.cpp
+++ b/src/msw/menu.cpp
@@ -50,13 +50,6 @@
 
 #include "wx/dynlib.h"
 
-#ifndef MNS_CHECKORBMP
-    #define MNS_CHECKORBMP 0x04000000
-#endif
-#ifndef MIM_STYLE
-    #define MIM_STYLE 0x00000010
-#endif
-
 // ----------------------------------------------------------------------------
 // global variables
 // ----------------------------------------------------------------------------