diff --git a/config/server.js b/config/server.js
index b7c0e71..b033da9 100644
--- a/config/server.js
+++ b/config/server.js
@@ -1,6 +1,5 @@
 ({
   host: '127.0.0.1',
-  transport: 'ws',
   ports: [8000, 8001, 8002, 8003],
   timeout: 5000,
   concurrency: 1000,
diff --git a/lib/server.js b/lib/server.js
index 9052425..f7a9f98 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -5,8 +5,6 @@ const { http, https, path, worker } = require('./dependencies.js');
 const WebSocket = require('ws');
 const Semaphore = require('./semaphore.js');
 
-const TRANSPORT = { http, https, ws: http, wss: https };
-
 const MIME_TYPES = {
   html: 'text/html; charset=UTF-8',
   json: 'application/json; charset=UTF-8',
@@ -156,23 +154,21 @@ class Server {
   constructor(config, application) {
     this.config = config;
     this.application = application;
-    const { ports, host, transport, concurrency, queue } = config;
+    const { ports, host, concurrency, queue } = config;
     this.semaphore = new Semaphore(concurrency, queue.size, queue.timeout);
     const { threadId } = worker;
     const port = ports[threadId - 1];
-    const lib = TRANSPORT[transport];
     const handler = listener(application);
-    this.instance = lib.createServer({ ...application.cert }, handler);
-    if (transport.startsWith('ws')) {
-      this.ws = new WebSocket.Server({ server: this.instance });
-      this.ws.on('connection', (connection, req) => {
-        const client = new Client(req, null, application, connection);
-        connection.on('message', message => {
-          const { method, args } = JSON.parse(message);
-          client.rpc(method, args);
-        });
+    const transport = threadId === 1 ? http : https;
+    this.instance = transport.createServer({ ...application.cert }, handler);
+    this.ws = new WebSocket.Server({ server: this.instance });
+    this.ws.on('connection', (connection, req) => {
+      const client = new Client(req, null, application, connection);
+      connection.on('message', message => {
+        const { method, args } = JSON.parse(message);
+        client.rpc(method, args);
       });
-    }
+    });
     this.instance.listen(port, host);
   }
 
diff --git a/worker.js b/worker.js
index 133dc63..147cea1 100644
--- a/worker.js
+++ b/worker.js
@@ -22,10 +22,14 @@ const startMonitoring = require('./init/logResources.js');
   const logger = await new Logger(logPath, threadId);
   const application = new Application();
   const certPath = path.join(PATH, 'cert');
-  const key = await fsp.readFile(path.join(certPath, 'key.pem'));
-  const cert = await fsp.readFile(path.join(certPath, 'cert.pem'));
-  Object.assign(application, { config, logger, cert });
-  application.cert = { key, cert };
+  Object.assign(application, { config, logger });
+  try {
+    const key = await fsp.readFile(path.join(certPath, 'key.pem'));
+    const cert = await fsp.readFile(path.join(certPath, 'cert.pem'));
+    application.cert = { key, cert };
+  } catch {
+    if (threadId === 1) logger.log('Can not load TLS certificates');
+  }
   application.db = new Database(config.sections.database, application);
   application.server = new Server(config.sections.server, application);
   application.auth = initAuth(application);