diff --git a/modules/angular2/src/platform/browser/tools/common_tools.ts b/modules/angular2/src/platform/browser/tools/common_tools.ts
index cbeb9dd2fc..fc0004ceaf 100644
--- a/modules/angular2/src/platform/browser/tools/common_tools.ts
+++ b/modules/angular2/src/platform/browser/tools/common_tools.ts
@@ -1,7 +1,7 @@
 import {ApplicationRef} from 'angular2/src/core/application_ref';
 import {ComponentRef, ComponentRef_} from 'angular2/src/core/linker/dynamic_component_loader';
 import {isPresent, NumberWrapper} from 'angular2/src/facade/lang';
-import {performance, window} from 'angular2/src/facade/browser';
+import {window} from 'angular2/src/facade/browser';
 import {DOM} from 'angular2/src/platform/dom/dom_adapter';
 
 /**