diff --git a/lib/waterfoul/screen.rb b/lib/waterfoul/screen.rb
index 0315c96..74f7b9d 100644
--- a/lib/waterfoul/screen.rb
+++ b/lib/waterfoul/screen.rb
@@ -1,16 +1,19 @@
 module Waterfoul
   class Screen
 
+    WINDOW_WIDTH = 480
+    WINDOW_HEIGHT = 432
+
     SCREEN_WIDTH = 160
     SCREEN_HEIGHT = 144
 
     def initialize
       SDL.InitSubSystem SDL::INIT_VIDEO
       @buffer = FFI::MemoryPointer.new :uint32, SCREEN_WIDTH * SCREEN_HEIGHT
-      @window = SDL.CreateWindow 'waterfoul', 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, SDL::SDL_WINDOW_RESIZABLE
+      @window = SDL.CreateWindow 'waterfoul', 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT, SDL::SDL_WINDOW_RESIZABLE
       @renderer = SDL.CreateRenderer @window, -1, 0
-      SDL.SetHint "SDL_RENDER_SCALE_QUALITY",  "linear"
-      SDL.RenderSetLogicalSize(@renderer, SCREEN_WIDTH, SCREEN_HEIGHT)
+      SDL.SetHint "SDL_HINT_RENDER_SCALE_QUALITY",  "2"
+      SDL.RenderSetLogicalSize(@renderer, WINDOW_WIDTH, WINDOW_HEIGHT)
       @texture = SDL.CreateTexture @renderer, SDL::PIXELFORMAT_ARGB8888, 1, SCREEN_WIDTH, SCREEN_HEIGHT
     end