diff --git a/types/sinon-chrome/sinon-chrome-tests.ts b/types/sinon-chrome/sinon-chrome-tests.ts
index 7ae8a3f862..ab5f050f52 100644
--- a/types/sinon-chrome/sinon-chrome-tests.ts
+++ b/types/sinon-chrome/sinon-chrome-tests.ts
@@ -1,6 +1,6 @@
 import * as sinon from 'sinon';
 import SinonChrome = require("sinon-chrome");
-var chromeStub = <typeof SinonChrome> <any> window.chrome;
+var chromeStub = window.chrome as any as typeof SinonChrome;
 
 // Examples taken from https://github.com/vitalets/sinon-chrome: