diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index d1e2a6b7a..2f1643782 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -1777,6 +1777,7 @@
   <define name="wxIMPLEMENT_APP_NO_MAIN(appname)" value=""/>
   <!-- Override macros which don't necessarily require semicolons at the end -->
   <define name="WXUNUSED(n)" value=""/>
+  <define name="WXDLLIMPEXP_FWD_CORE" value=""/>
   <define name="wxDECLARE_APP(MyApp)" value="extern appname&amp; wxGetApp()"/>
   <define name="DECLARE_CLASS(n)" value=""/>
   <define name="DECLARE_DYNAMIC_CLASS(n)" value=""/>