diff --git a/wxPython/src/_defs.i b/wxPython/src/_defs.i
index b9b3c361c9..35ae16ee1c 100644
--- a/wxPython/src/_defs.i
+++ b/wxPython/src/_defs.i
@@ -515,6 +515,7 @@ enum {
     wxCB_DROPDOWN,
     wxCB_SORT,
     wxCB_READONLY,
+    wxCB_FILENAME,
     wxRA_HORIZONTAL,
     wxRA_VERTICAL,
     wxRA_SPECIFY_ROWS,