diff --git a/public/app/features/alerting/alert_tab_ctrl.ts b/public/app/features/alerting/alert_tab_ctrl.ts
index 25c23580ed7..2c273c93a01 100644
--- a/public/app/features/alerting/alert_tab_ctrl.ts
+++ b/public/app/features/alerting/alert_tab_ctrl.ts
@@ -383,6 +383,7 @@ export class AlertTabCtrl {
 
   test() {
     this.testing = true;
+    this.testResult = false;
 
     var payload = {
       dashboard: this.dashboardSrv.getCurrent().getSaveModelClone(),