diff --git a/scripts/Credits_Message.rb b/scripts/Credits_Message.rb
index dccbc7b..2cb5316 100644
--- a/scripts/Credits_Message.rb
+++ b/scripts/Credits_Message.rb
@@ -16,7 +16,7 @@ class Credits_Message
       @sprite_bg.bitmap.fill_rect(0, 0, Graphics.width, Graphics.height, Color.new(255, 255, 255, 255))
     end
     @sprite_text = Sprite.new(@viewport)
-    @contents = Bitmap.new(320, 240)
+    @contents = Bitmap.new((Graphics.width / 2), (Graphics.height / 2))
     Language.register_text_sprite(self.class.name + "_contents", @contents)
     @contents.font.size = 16
     @sprite_text.bitmap = @contents