diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 1dc17b2f25..04b6e8a983 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -3170,6 +3170,7 @@ void wxWindowGTK::GTKHandleFocusOutNoDeferring()
 
     wxFocusEvent event( wxEVT_KILL_FOCUS, GetId() );
     event.SetEventObject( this );
+    event.SetWindow( FindFocus() );
     GTKProcessEvent( event );
 }