diff --git a/modules/caravan/api_getreward.go b/modules/caravan/api_getreward.go
index 220b98012..fcd829d53 100644
--- a/modules/caravan/api_getreward.go
+++ b/modules/caravan/api_getreward.go
@@ -37,14 +37,14 @@ func (this *apiComp) GetReward(session comm.IUserSession, req *pb.CaravanGetRewa
 			if reward.Key < 0 {
 				break
 			}
-			if _, ok := caravan.Reward[req.Lv]; ok {
+			if _, ok := caravan.Reward[index]; ok {
 				continue
 			}
 			if curProfit < int64(reward.Key) {
 				break
 			} else {
 				res = append(res, reward.Reward...)
-				caravan.Reward[req.Lv] = true
+				caravan.Reward[index] = true
 			}
 		}