diff --git a/build/webpack.prod.js b/build/webpack.prod.js
index e21d673581..1b517d66a9 100644
--- a/build/webpack.prod.js
+++ b/build/webpack.prod.js
@@ -49,18 +49,18 @@ const config = webpackMerge(commonConfig({
       minimize: true,
       debug: false
     }),
-    // new webpack.optimize.UglifyJsPlugin({
-    //   compress: {
-    //     warnings: false,
-    //     screw_ie8: true,
-    //     negate_iife: false // for lazy v8
-    //   },
-    //   mangle: { screw_ie8 : true },
-    //   output: {
-    //     comments: false
-    //   },
-    //   sourceMap: true
-    // }),
+    new webpack.optimize.UglifyJsPlugin({
+      compress: {
+        warnings: false,
+        screw_ie8: true,
+        negate_iife: false // for lazy v8
+      },
+      mangle: { screw_ie8 : true },
+      output: {
+        comments: false
+      },
+      sourceMap: true
+    }),
     new webpack.BannerPlugin(BANNER)
   ]
 })
diff --git a/lib/services/menu.service.ts b/lib/services/menu.service.ts
index cebff4da87..18e4719697 100644
--- a/lib/services/menu.service.ts
+++ b/lib/services/menu.service.ts
@@ -50,14 +50,14 @@ export class MenuService {
   items: MenuItem[];
   activeIdx: number = -1;
 
+  public domRoot: Document | Element = document;
+
   private _flatItems: MenuItem[];
   private _hashSubscription: Subscription;
   private _scrollSubscription: Subscription;
   private _progressSubscription: Subscription;
   private _tagsWithOperations: any;
 
-  public domRoot: Document | Element = document;
-
   constructor(
     private hash:Hash,
     private tasks: LazyTasksService,
@@ -70,7 +70,7 @@ export class MenuService {
     this.specMgr.spec.subscribe(spec => {
       if (!spec) return;
       this.buildMenu();
-    })
+    });
 
     this._scrollSubscription = scrollService.scroll.subscribe((evt) => {
       this.onScroll(evt.isScrolledDown);