diff --git a/include/wx/html/helpwnd.h b/include/wx/html/helpwnd.h
index a2fbd2224a..03c9704664 100644
--- a/include/wx/html/helpwnd.h
+++ b/include/wx/html/helpwnd.h
@@ -318,7 +318,8 @@ private:
 typedef void (wxEvtHandler::*wxHtmlWindowEventFunction)(wxHtmlWindowEvent&);
 
 BEGIN_DECLARE_EVENT_TYPES()
-    DECLARE_EVENT_TYPE(wxEVT_COMMAND_HTMLWINDOW_URL_CLICKED, 1000)
+    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_HTML,
+                                wxEVT_COMMAND_HTMLWINDOW_URL_CLICKED, 1000)
 END_DECLARE_EVENT_TYPES()
 
 #define EVT_HTMLWINDOW_URL_CLICKED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_HTMLWINDOW_URL_CLICKED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxHtmlWindowEventFunction) & fn, (wxObject *) NULL ),