diff --git a/dungeonbattle/tests/game_test.py b/dungeonbattle/tests/game_test.py
index 84d7cf9..5bf97e9 100644
--- a/dungeonbattle/tests/game_test.py
+++ b/dungeonbattle/tests/game_test.py
@@ -123,7 +123,7 @@ class TestGame(unittest.TestCase):
         self.game.handle_key_pressed(KeyValues.SPACE)
         self.assertEqual(self.game.state, GameMode.MAINMENU)
 
-    def test_dead_screen(self):
+    def test_dead_screen(self) -> None:
         """
         Kill player and render dead screen.
         """
@@ -138,4 +138,3 @@ class TestGame(unittest.TestCase):
             new_y, new_x = self.game.player.y, self.game.player.x
             self.assertEqual(new_y, y)
             self.assertEqual(new_x, x)
-