diff --git a/javascripts/scale.fix.js b/javascripts/scale.fix.js
index 87a40ca7..b787c11d 100644
--- a/javascripts/scale.fix.js
+++ b/javascripts/scale.fix.js
@@ -1,7 +1,7 @@
-var metas = document.getElementsByTagName('meta');
-var i;
+let metas = document.getElementsByTagName('meta');
+
 if (navigator.userAgent.match(/iPhone/i)) {
-  for (i=0; i<metas.length; i++) {
+  for (let i=0; i<metas.length; i++) {
     if (metas[i].name == "viewport") {
       metas[i].content = "width=device-width, minimum-scale=1.0, maximum-scale=1.0";
     }
@@ -9,9 +9,9 @@ if (navigator.userAgent.match(/iPhone/i)) {
   document.addEventListener("gesturestart", gestureStart, false);
 }
 function gestureStart() {
-  for (i=0; i<metas.length; i++) {
+  for (let i=0; i<metas.length; i++) {
     if (metas[i].name == "viewport") {
       metas[i].content = "width=device-width, minimum-scale=0.25, maximum-scale=1.6";
     }
   }
-}
\ No newline at end of file
+}