diff --git a/src/panel-triggers/editor.js b/src/panel-triggers/editor.js
index 575e4f6..fd8c8ac 100644
--- a/src/panel-triggers/editor.js
+++ b/src/panel-triggers/editor.js
@@ -14,7 +14,7 @@
 import _ from 'lodash';
 import $ from 'jquery';
 
-class TriggerPanelEditorCtrl{
+class TriggerPanelEditorCtrl {
 
   /** @ngInject */
   constructor($scope, $q, uiSegmentSrv, datasourceSrv, templateSrv, popoverSrv) {
diff --git a/src/panel-triggers/module.js b/src/panel-triggers/module.js
index b29c0b0..ad93b08 100644
--- a/src/panel-triggers/module.js
+++ b/src/panel-triggers/module.js
@@ -66,7 +66,9 @@ class TriggerPanelCtrl extends MetricsPanelCtrl {
     this.defaultTimeFormat = defaultTimeFormat;
 
     // Load panel defaults
-    _.defaults(this.panel, panelDefaults);
+    // _.cloneDeep() need for prevent changing shared defaultSeverity.
+    // Load object "by value" istead "by reference".
+    _.defaults(this.panel, _.cloneDeep(panelDefaults));
 
     this.triggerList = [];
     this.refreshData();