diff --git a/include/wx/msw/chkconf.h b/include/wx/msw/chkconf.h
index b1c8c9125c..502d40be42 100644
--- a/include/wx/msw/chkconf.h
+++ b/include/wx/msw/chkconf.h
@@ -403,7 +403,7 @@
 
 /* VC6 can't handle the templates for the 'type safe events': */
 #if !wxEVENTS_COMPATIBILITY_2_8
-#   ifdef __VISUALC6__
+#   if wxVISUALC_VERSION && !wxCHECK_VISUALC_VERSION(8)
 #       undef wxEVENTS_COMPATIBILITY_2_8
 #       define wxEVENTS_COMPATIBILITY_2_8 1
 #   endif