diff --git a/src/node/hooks/express/padreadonly.js b/src/node/hooks/express/padreadonly.js
index f17f7f0d6..4dda67b1f 100644
--- a/src/node/hooks/express/padreadonly.js
+++ b/src/node/hooks/express/padreadonly.js
@@ -1,8 +1,10 @@
+'use strict';
+
 const readOnlyManager = require('../../db/ReadOnlyManager');
 const hasPadAccess = require('../../padaccess');
 const exporthtml = require('../../utils/ExportHtml');
 
-exports.expressCreateServer = function (hook_name, args, cb) {
+exports.expressCreateServer = (hookName, args, cb) => {
   // serve read only pad
   args.app.get('/ro/:id', async (req, res) => {
     // translate the read only pad to a padId