diff --git a/src/services/shims.ts b/src/services/shims.ts
index e6836d8b9b8..56ab852606c 100644
--- a/src/services/shims.ts
+++ b/src/services/shims.ts
@@ -16,7 +16,7 @@
 /// <reference path='services.ts' />
 
 /* @internal */
-let debugObjectHost = new Function("return this")();
+let debugObjectHost = (function (this: any) { return this; })();
 
 // We need to use 'null' to interface with the managed side.
 /* tslint:disable:no-null-keyword */