diff --git a/plugin/api/alerting/rule.go b/plugin/api/alerting/rule.go
index 1f29fc39..949fa7b1 100644
--- a/plugin/api/alerting/rule.go
+++ b/plugin/api/alerting/rule.go
@@ -200,7 +200,7 @@ func (alertAPI *AlertAPI) getRuleDetail(w http.ResponseWriter, req *http.Request
 func saveActivity(activityInfo *event.Activity){
 	queueConfig := queue.GetOrInitConfig("platform##activities")
 	if queueConfig.Labels == nil {
-		queueConfig.Labels = map[string]interface{}{
+		queueConfig.Labels = util.MapStr{
 			"type":     "platform",
 			"name":     "activity",
 			"category": "elasticsearch",
@@ -895,4 +895,4 @@ func getRuleMetricData( rule *alerting.Rule, filterParam *alerting.FilterParam)
 //		log.Error(err)
 //	}
 //	alertAPI.WriteJSON(w, data, http.StatusOK)
-//}
\ No newline at end of file
+//}