diff --git a/lib/config/index.js b/lib/config/index.js
index f78513a03..c4727e8f0 100644
--- a/lib/config/index.js
+++ b/lib/config/index.js
@@ -129,7 +129,7 @@ config.isPDFExportEnable = config.allowPDFExport
 
 // Check gitlab api version
 if (config.gitlab && config.gitlab.version !== 'v4' && config.gitlab.version !== 'v3') {
-  logger.warn('config.js contains wrong version (' + config.gitlab.version + ') for gitlab api; it should be \'v3\' or \'v4\'. Defaulting to v4')
+  logger.warn('config.json contains wrong version (' + config.gitlab.version + ') for gitlab api; it should be \'v3\' or \'v4\'. Defaulting to v4')
   config.gitlab.version = 'v4'
 }
 // If gitlab scope is api, enable snippets Export/import
@@ -150,7 +150,7 @@ for (let i = keys.length; i--;) {
   if (uppercase.test(keys[i]) &&
   config[lowercaseKey] !== undefined &&
   fileConfig[keys[i]] === undefined) {
-    logger.warn('config.js contains deprecated lowercase setting for ' + keys[i] + '. Please change your config.js file to replace ' + lowercaseKey + ' with ' + keys[i])
+    logger.warn('config.json contains deprecated lowercase setting for ' + keys[i] + '. Please change your config.json file to replace ' + lowercaseKey + ' with ' + keys[i])
     config[keys[i]] = config[lowercaseKey]
   }
 }
@@ -162,7 +162,7 @@ if (Object.keys(process.env).toString().indexOf('HMD_') !== -1) {
 
 // Generate session secret if it stays on default values
 if (config.sessionSecret === 'secret') {
-  logger.warn('Session secret not set. Using random generated one. Please set `sessionSecret` in your config.js file. All users will be logged out.')
+  logger.warn('Session secret not set. Using random generated one. Please set `sessionSecret` in your config.json file. All users will be logged out.')
   config.sessionSecret = crypto.randomBytes(Math.ceil(config.sessionSecretLen / 2)) // generate crypto graphic random number
     .toString('hex') // convert to hexadecimal format
     .slice(0, config.sessionSecretLen) // return required number of characters