diff --git a/public/app/features/panel/metrics_panel_ctrl.ts b/public/app/features/panel/metrics_panel_ctrl.ts
index c139f5c8313..f85a9f4562a 100644
--- a/public/app/features/panel/metrics_panel_ctrl.ts
+++ b/public/app/features/panel/metrics_panel_ctrl.ts
@@ -11,7 +11,6 @@ import {metricsTabDirective} from './metrics_tab';
 
 class MetricsPanelCtrl extends PanelCtrl {
   scope: any;
-  loading: boolean;
   datasource: any;
   datasourceName: any;
   $q: any;
diff --git a/public/app/features/panel/panel_ctrl.ts b/public/app/features/panel/panel_ctrl.ts
index 34574bdb476..16e2e69b1fb 100644
--- a/public/app/features/panel/panel_ctrl.ts
+++ b/public/app/features/panel/panel_ctrl.ts
@@ -31,6 +31,7 @@ export class PanelCtrl {
   containerHeight: any;
   events: Emitter;
   timing: any;
+  loading: boolean;
 
   constructor($scope, $injector) {
     this.$injector = $injector;