diff --git a/models/task_accomplish_log.go b/models/task_accomplish_log.go
index 75494bfa2..582411561 100644
--- a/models/task_accomplish_log.go
+++ b/models/task_accomplish_log.go
@@ -30,11 +30,11 @@ func getTaskAccomplishLog(tl *TaskAccomplishLog) (*TaskAccomplishLog, error) {
 	return tl, nil
 }
 
-func CountTaskAccomplishLogInTaskPeriod(configId int64, userId int64, period *PeriodResult) (int64, error) {
+func CountTaskAccomplishLogInTaskPeriod(taskCode string, userId int64, period *PeriodResult) (int64, error) {
 	if period == nil {
-		return x.Where("config_id = ? and user_id = ?", configId, userId).Count(&TaskAccomplishLog{})
+		return x.Where("task_code = ? and user_id = ?", taskCode, userId).Count(&TaskAccomplishLog{})
 	} else {
-		return x.Where("config_id = ? and user_id = ? and created_unix >= ? and created_unix < ? ", configId, userId, period.StartTime.Unix(), period.EndTime.Unix()).Count(&TaskAccomplishLog{})
+		return x.Where("task_code = ? and user_id = ? and created_unix >= ? and created_unix < ? ", taskCode, userId, period.StartTime.Unix(), period.EndTime.Unix()).Count(&TaskAccomplishLog{})
 	}
 
 }
diff --git a/services/reward/limiter/limiter.go b/services/reward/limiter/limiter.go
index a73779ac1..d357ceabd 100644
--- a/services/reward/limiter/limiter.go
+++ b/services/reward/limiter/limiter.go
@@ -142,6 +142,9 @@ func (l *limiterRunner) limit(r models.LimitConfig) error {
 		}
 		if p != nil {
 			redis_client.Expire(redisKey, p.LeftTime)
+		} else {
+			//add default expire time if no period set
+			redis_client.Expire(redisKey, 24*time.Hour)
 		}
 	}
 	if usedNum > r.LimitNum {
@@ -183,7 +186,7 @@ func (l *limiterRunner) LoadLimiters() error {
 func (l *limiterRunner) countInPeriod(r models.LimitConfig, p *models.PeriodResult) (int64, error) {
 	switch r.LimitType {
 	case models.LimitTypeTask.Name():
-		return models.CountTaskAccomplishLogInTaskPeriod(r.ID, l.userId, p)
+		return models.CountTaskAccomplishLogInTaskPeriod(r.LimitCode, l.userId, p)
 	case models.LimitTypeRewardPoint.Name():
 		return models.SumRewardAmountInTaskPeriod(models.RewardTypePoint.Name(), r.LimitCode, l.userId, p)
 	default: