diff --git a/scoreboard.py b/scoreboard.py
index afa3567..9563760 100644
--- a/scoreboard.py
+++ b/scoreboard.py
@@ -58,10 +58,10 @@ class Scoreboard():
         self.level_rect.right = self.score_rect.right
         self.level_rect.top = self.score_rect.bottom + 10
 
-        def prep_ships(self):
-            """显示还余下多少艘飞船"""
-            self.ships = Group()
-            for ship_number in range(self.stats.ships_left):
+    def prep_ships(self):
+         """显示还余下多少艘飞船"""
+        self.ships = Group()
+        for ship_number in range(self.stats.ships_left):
             ship = Ship(self.ai_settings, self.screen)
             ship.rect.x = 10 + ship_number * ship.rect.width
             ship.rect.y = 10