diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index bc9f8de045..d7911869bf 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -3615,9 +3615,6 @@ gdk_window_supports_csd (GtkWindow *window)
       if (!gdk_screen_is_composited (screen))
         return FALSE;
 
-      if (!gdk_x11_screen_supports_net_wm_hint (screen, gdk_atom_intern_static_string ("_GTK_FRAME_EXTENTS")))
-        return FALSE;
-
       /* We need a visual with alpha */
       visual = gdk_screen_get_rgba_visual (screen);
       if (!visual)