diff --git a/app/assets/javascripts/sitewide/perfect_scrollbar.js b/app/assets/javascripts/sitewide/perfect_scrollbar.js
index 4fe8db28b..c27c19286 100644
--- a/app/assets/javascripts/sitewide/perfect_scrollbar.js
+++ b/app/assets/javascripts/sitewide/perfect_scrollbar.js
@@ -4,9 +4,9 @@ var activePSB = [];
 
 var PerfectSb = (function() {
   function init() {
+    activePSB.length = 0;
     $.each($('.perfect-scrollbar'), function(index, object) {
       var ps;
-      activePSB.length = 0;
       ps = new PerfectScrollbar(object, { wheelSpeed: 0.5, minScrollbarLength: 20 });
       activePSB.push(ps);
     });