diff --git a/src/game/CardTile.h b/src/game/CardTile.h
index 51ba6e9..2d0003f 100644
--- a/src/game/CardTile.h
+++ b/src/game/CardTile.h
@@ -87,7 +87,7 @@ namespace UNO::GAME {
         /**
          * @return 牌堆中最上方的牌
          */
-        Card getFront() const;
+        [[nodiscard]] Card getFront() const;
     };
 
     /**