diff --git a/lib/ComicBook.js b/lib/ComicBook.js
index 0eb1596..a6be874 100755
--- a/lib/ComicBook.js
+++ b/lib/ComicBook.js
@@ -187,7 +187,7 @@ var ComicBook = (function ($) {
     }
 
     window.addEventListener('touchstart', function (e) {
-      var $dropdown, $el = $(e.target);
+      var $el = $(e.target);
       if ($el.data('toggle') === 'dropdown' ) {
         $el.siblings('.dropdown').toggle();
       }