diff --git a/fbsdk/fbsdk.d.ts b/fbsdk/fbsdk.d.ts
index 6f5df4fea3..6e3890e014 100644
--- a/fbsdk/fbsdk.d.ts
+++ b/fbsdk/fbsdk.d.ts
@@ -124,7 +124,7 @@ interface FBSDK{
 	Canvas : FBSDKCanvas;
 }
 
-interface FBWindow extends Window {
+interface Window{
 	fbAsyncInit() : any;
 }
 
@@ -132,5 +132,4 @@ declare module "FB" {
 	export = FB;
 }
 
-declare var FB : FBSDK;
-declare var window : FBWindow;
\ No newline at end of file
+declare var FB : FBSDK;
\ No newline at end of file