diff --git a/interface/wx/dirctrl.h b/interface/wx/dirctrl.h
index c694b9718a..2583497d9c 100644
--- a/interface/wx/dirctrl.h
+++ b/interface/wx/dirctrl.h
@@ -277,3 +277,5 @@ public:
     //// Operations
     void FillFilterList(const wxString& filter, int defaultFilter);
 };
+
+wxEventType wxEVT_DIRCTRL_CHANGED;