diff --git a/polyfills/filter.js b/polyfills/filter.js
index d3efc3a..c769e24 100644
--- a/polyfills/filter.js
+++ b/polyfills/filter.js
@@ -1,5 +1,5 @@
 Array.prototype.filterAlbums = function(callback, context) {
-  arr = [];
+  let arr = [];
   for (var i = 0; i < this.length; i++) {
     if (callback.call(context, this[i], i, this)) {
       arr.push(this[i]);