diff --git a/admin/javascript/LeftAndMain.Tree.js b/admin/javascript/LeftAndMain.Tree.js
index 4f390b6d7..adcee2e59 100644
--- a/admin/javascript/LeftAndMain.Tree.js
+++ b/admin/javascript/LeftAndMain.Tree.js
@@ -102,6 +102,7 @@
 			},
 
 			getTreeConfig: function() {
+				var self = this;
 				return {
 					'core': {
 						'initially_open': ['record-0'],