diff --git a/docs/reference/gtk/images/drawing.png b/docs/reference/gtk/images/drawing.png
index a5105002ef..298a3f7e27 100644
Binary files a/docs/reference/gtk/images/drawing.png and b/docs/reference/gtk/images/drawing.png differ
diff --git a/docs/reference/gtk/images/grid-packing.png b/docs/reference/gtk/images/grid-packing.png
index 3dec7d5fcd..4a274d2368 100644
Binary files a/docs/reference/gtk/images/grid-packing.png and b/docs/reference/gtk/images/grid-packing.png differ
diff --git a/docs/reference/gtk/images/hello-world.png b/docs/reference/gtk/images/hello-world.png
index acf7aaff8f..f73d49f246 100644
Binary files a/docs/reference/gtk/images/hello-world.png and b/docs/reference/gtk/images/hello-world.png differ
diff --git a/docs/reference/gtk/images/window-default.png b/docs/reference/gtk/images/window-default.png
index 40245c4b6c..2ca75dc982 100644
Binary files a/docs/reference/gtk/images/window-default.png and b/docs/reference/gtk/images/window-default.png differ
diff --git a/examples/window-default.c b/examples/window-default.c
index 79888def97..4b7a22f785 100644
--- a/examples/window-default.c
+++ b/examples/window-default.c
@@ -9,6 +9,7 @@ main (int   argc,
   gtk_init (&argc, &argv);
 
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (window), "Window");
 
   g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);