diff --git a/src/services/GameLogic.ts b/src/services/GameLogic.ts
index 62f7310..897c9e1 100644
--- a/src/services/GameLogic.ts
+++ b/src/services/GameLogic.ts
@@ -128,7 +128,7 @@ export async function sendOneQuestion(history: any) {
  * @return {Promise<void>}
  */
 export async function sendReward(history: any) {
-  let activity = await ShopActivity.findById(history.activity)
+  let activity = await ShopActivity.findById(history.activityId)
   if (activity.rewardInfo.length === 0) {
     return
   }