diff --git a/src/core/window.c b/src/core/window.c
index 75a6ef333..059d5b048 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -7792,6 +7792,7 @@ recalc_window_type (MetaWindow *window)
       gboolean old_decorated = window->decorated;
       GObject  *object = G_OBJECT (window);
 
+      window->attached = meta_window_should_attach_to_parent (window);
       recalc_window_features (window);
 
       if (!window->override_redirect)