diff --git a/src/services/GameLogic.ts b/src/services/GameLogic.ts
index 6b15223..5fbbc60 100644
--- a/src/services/GameLogic.ts
+++ b/src/services/GameLogic.ts
@@ -87,8 +87,8 @@ export async function sendOneQuestion(history: any) {
     await endGame(roomId, {closeTime: BaseConst.ROOM_AUTO_CLOSE_TIME})
     return
   }
-  const questions = Array.from(history.questions.keys())
-  let qid = questions[history.current]
+  const questions:string[] = Array.from(history.questions.keys())
+  let qid: string = questions[history.current]
   let record = await Puzzle.findById(qid)
   let qdata: any = transformRecord([record])[0]
   qdata.no = history.current