diff --git a/snake.py b/snake.py
index 568e25a..208ac7f 100755
--- a/snake.py
+++ b/snake.py
@@ -308,7 +308,7 @@ def display_score(self) -> None:
         )
 
     def run(self) -> str:
-        """Main loop for game"""
+        """Main loop for game. Returns why game ended."""
         while True:
             if not self._running:
                 return "Quit"