diff --git a/src/viewer/AusGlobeViewer.js b/src/viewer/AusGlobeViewer.js
index <HASH>..<HASH> 100644
--- a/src/viewer/AusGlobeViewer.js
+++ b/src/viewer/AusGlobeViewer.js
@@ -488,7 +488,7 @@ DrawExtentHelper.prototype.start = function () {
 
 DrawExtentHelper.prototype.destroy = function () {
     this._mouseHandler.destroy();
-    this._scene = undefined
+    this._scene = undefined;
 };
Fix jshint warning.