diff --git a/🕹️cube-tube/app/tick.rb b/🕹️cube-tube/app/tick.rb
index adfc74a..0bb08ab 100644
--- a/🕹️cube-tube/app/tick.rb
+++ b/🕹️cube-tube/app/tick.rb
@@ -53,7 +53,7 @@ def debug_tick(args)
 
   debug_label(
     args, 24.from_right, 24.from_top,
-    "v#{version} | DR v#{$gtk.version} (#{$gtk.platform}) | Ticks: #{args.state.tick_count} | FPS: #{args.gtk.current_framerate.round}",
+    "v#{version} | DR v#{$gtk.version} (#{$gtk.platform}) | Ticks: #{args.state.tick_count} | FPS: #{args.gtk.current_framerate.round} | Win: #{args.grid.window_width}x#{args.grid.window_height}",
     ALIGN_RIGHT)