diff --git a/src/libs/middlewares/response.js b/src/libs/middlewares/response.js
index accd84a23e4bd17ba4842882031753b27c1c8b21..09fa56566ec8444056fd3dbf3f8f0447eff9470a 100644
--- a/src/libs/middlewares/response.js
+++ b/src/libs/middlewares/response.js
@@ -3,12 +3,12 @@ const log = require(`${libs}/log`)(module);
 const xml = require('js2xmlparser');
 
 function response(value) {
-    return function (req, res, next) {
+    return (req, res, next) => {
         log.debug(req.query.format);
         if (req.query.format === 'csv') {
-            res.csv (req.result);
+            res.csv(req.result);
         } else if (req.query.format === 'xml') {
-            res.send (xml('result', JSON.stringify({ [value]: req.result })));
+            res.send(xml('result', JSON.stringify({ [value]: req.result })));
         } else {
             res.json({ result: req.result });
         }