diff --git a/DocService/sources/server.js b/DocService/sources/server.js
index ed4bd57c..d9ba8f2f 100644
--- a/DocService/sources/server.js
+++ b/DocService/sources/server.js
@@ -6,7 +6,7 @@ const config = configCommon.get('services.CoAuthoring');
 
 const logger = require('./../../Common/sources/logger');
 
-/*if (cluster.isMaster) {
+if (cluster.isMaster) {
   const numCPUs = require('os').cpus().length;
   const license = require('./../../Common/sources/license');
 
@@ -57,7 +57,7 @@ const logger = require('./../../Common/sources/logger');
 
   fs.watchFile(configCommon.get('license').get('license_file'), updateLicense);
   setInterval(updateLicense, 86400000);
-} else {*/
+} else {
   const express = require('express');
   const http = require('http');
   const urlModule = require('url');
@@ -176,7 +176,7 @@ const logger = require('./../../Common/sources/logger');
     }
     docsCoServer.setLicenseInfo(msg.data);
   });
-//}
+}
 
 process.on('uncaughtException', (err) => {
   logger.error((new Date).toUTCString() + ' uncaughtException:', err.message);