diff --git a/lib/engine.js b/lib/engine.js
index a697d6e..dd53e44 100644
--- a/lib/engine.js
+++ b/lib/engine.js
@@ -117,8 +117,7 @@ function middie (complete) {
 }
 
 function sanitizeUrl (url) {
-  /* eslint-disable-next-line no-var */
-  for (var i = 0, len = url.length; i < len; i++) {
+  for (let i = 0, len = url.length; i < len; i++) {
     const charCode = url.charCodeAt(i)
     if (charCode === 63 || charCode === 35) {
       return url.slice(0, i)