diff --git a/dwss.cc b/dwss.cc
index c5b0f89..ef121c3 100644
--- a/dwss.cc
+++ b/dwss.cc
@@ -134,11 +134,7 @@ configure (GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
 static gboolean
 update (void *user_data)
 {
-    GdkRectangle rect;
-    GdkWindow *win = gtk_widget_get_parent_window(drawing_area);
-    rect.x = rect.y = 0;
-    gdk_window_get_geometry(win, NULL, NULL, &rect.width, &rect.height, NULL);
-    gdk_window_invalidate_rect(win, &rect, TRUE);
+    gtk_widget_queue_draw(drawing_area);
     return TRUE;
 }