diff --git a/tools/designer/editor/editor.cpp b/tools/designer/editor/editor.cpp
index cba8123..1a30dcc 100644
--- a/tools/designer/editor/editor.cpp
+++ b/tools/designer/editor/editor.cpp
@@ -207,7 +207,7 @@ TQPopupMenu *Editor::createPopupMenu( const TQPoint &p )
     return menu;
 }
 
-bool Editor::eventFilter( TQObject *o, TQEvent *e )
+Q_EXPORT bool Editor::eventFilter( TQObject *o, TQEvent *e )
 {
     if ( ( e->type() == TQEvent::FocusIn || e->type() == TQEvent::FocusOut ) &&
 	 ( o == this || o == viewport() ) ) {