diff --git a/README.md b/README.md
index c0b2144..4b89b59 100755
--- a/README.md
+++ b/README.md
@@ -154,7 +154,7 @@ $webSocketServer->run();
 ```php
 <?php
 use WSSC\WebSocketClient;
-use \WSSC\Components\ClientConfig;
+use WSSC\Components\ClientConfig;
 
 $client = new WebSocketClient('ws://localhost:8000/notifications/messanger/yourtoken123', new ClientConfig());
 $client->send('{"user_id" : 123}');
diff --git a/src/Components/WscMain.php b/src/Components/WscMain.php
index 6fbb055..d958735 100755
--- a/src/Components/WscMain.php
+++ b/src/Components/WscMain.php
@@ -121,7 +121,7 @@ protected function connect(ClientConfig $config): void
             'Host'                  => $this->config->getHost() . ':' . $this->config->getPort(),
             'User-Agent'            => 'websocket-client-php',
             'Connection'            => 'Upgrade',
-            'Upgrade'               => 'WebSocket',
+            'Upgrade'               => 'websocket',
             'Sec-WebSocket-Key'     => $key,
             'Sec-Websocket-Version' => '13',
         ];