diff --git a/src/Api/src/controller/spotify-controller/crypt.ts b/src/Api/src/controller/spotify-controller/crypt.ts
index 56378d3..6e188c4 100644
--- a/src/Api/src/controller/spotify-controller/crypt.ts
+++ b/src/Api/src/controller/spotify-controller/crypt.ts
@@ -6,10 +6,10 @@ export default class CryptString{
         this.stringCrypt = this.generateRandomString(length);
     }
     generateRandomString (length : number){
-        var text = '';
-        var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+        let text = '';
+        const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
       
-        for (var i = 0; i < length; i++) {
+        for (let i = 0; i < length; i++) {
           text += possible.charAt(Math.floor(Math.random() * possible.length));
         }
         return text;