diff --git a/packages/readabilityjs/Readability.js b/packages/readabilityjs/Readability.js
index e61b453a5..2a5b6042c 100644
--- a/packages/readabilityjs/Readability.js
+++ b/packages/readabilityjs/Readability.js
@@ -483,7 +483,7 @@ Readability.prototype = {
       node.removeAttribute("class");
     }
 
-    _removeAllEventHandlers(media)
+    this._removeAllEventHandlers(media)
 
     for (node = node.firstElementChild; node; node = node.nextElementSibling) {
       this._cleanElement(node);