diff --git a/src/web_accessible_resources/addthis_widget.js b/src/web_accessible_resources/addthis_widget.js
index 406b40dda..8212ab5c3 100644
--- a/src/web_accessible_resources/addthis_widget.js
+++ b/src/web_accessible_resources/addthis_widget.js
@@ -26,6 +26,7 @@
     window.addthis = {
         addEventListener: noopfn,
         button: noopfn,
+        counter: noopfn,
         init: noopfn,
         layers: noopfn,
         ready: noopfn,