diff --git a/gtk/gtknsview.c b/gtk/gtknsview.c
index bb9ae06..6820113 100644
--- a/gtk/gtknsview.c
+++ b/gtk/gtknsview.c
@@ -534,7 +534,7 @@ gtk_ns_view_notify (GObject    *object,
                     GParamSpec *pspec)
 {
   GtkNSView *ns_view = GTK_NS_VIEW (object);
-  GtkWindow *window = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (object)));
+  GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (object));

   if (G_OBJECT_CLASS (gtk_ns_view_parent_class)->notify)
     G_OBJECT_CLASS (gtk_ns_view_parent_class)->notify (object, pspec);
@@ -551,7 +551,7 @@ gtk_ns_view_notify (GObject    *object,

       if (gtk_widget_has_focus (GTK_WIDGET (object)))
         [ns_window makeFirstResponder:ns_view->priv->view];
-      else if ([ns_window firstResponder] == ns_view->priv->view || !gtk_window_is_active (window))
+      else if ([ns_window firstResponder] == ns_view->priv->view || (GTK_IS_WINDOW (toplevel) && !gtk_window_is_active (GTK_WINDOW (toplevel))))
         [ns_window makeFirstResponder:nil];
     }
 }