diff --git a/Blob.js b/Blob.js
index 7dc0313..f79055b 100644
--- a/Blob.js
+++ b/Blob.js
@@ -212,9 +212,5 @@
 	   typeof self !== "undefined" && self
 	|| typeof window !== "undefined" && window
 	|| typeof global !== "undefined" && global 
-	|| Function('return this.content')() 
-	|| Function('return this')()
+	|| this
 ));
-// `self` is undefined in Firefox for Android content script context
-// while `this` is nsIContentFrameMessageManager
-// with an attribute `content` that corresponds to the window