diff --git a/src/mred/wxs/wxs_win.cxx b/src/mred/wxs/wxs_win.cxx
index 561948fa9f..cbda327f67 100644
--- a/src/mred/wxs/wxs_win.cxx
+++ b/src/mred/wxs/wxs_win.cxx
@@ -106,7 +106,7 @@ static Bool wxIsShownToRoot(wxWindow *w)
 
 static long wxWindowGetHandle(wxWindow *w)
 {
-#ifdef wx_win
+#ifdef wx_msw
   return (long)w->GetHWND();
 #else
   return w->GetWindowHandle();