diff --git a/lib/cartodb/middleware/context/layergroup-token.js b/lib/cartodb/middleware/context/layergroup-token.js
index f611b068..c4aac23f 100644
--- a/lib/cartodb/middleware/context/layergroup-token.js
+++ b/lib/cartodb/middleware/context/layergroup-token.js
@@ -1,5 +1,4 @@
-var LayergroupToken = require('../../models/layergroup-token');
-
+const LayergroupToken = require('../../models/layergroup-token');
 const authErrorMessageTemplate = function (signer, user) {
     return `Cannot use map signature of user "${signer}" on db of user "${user}"`;
 };