diff --git a/src/Connector.php b/src/Connector.php
index 822cec0..385f71a 100644
--- a/src/Connector.php
+++ b/src/Connector.php
@@ -6,7 +6,7 @@
 use React\Socket\ConnectionInterface;
 use React\Socket\ConnectorInterface;
 use React\Promise\Deferred;
-use React\Promise\RejectedPromise;
+use function React\Promise\reject;
 use Psr\Http\Message\RequestInterface;
 use GuzzleHttp\Psr7 as gPsr;
 
@@ -39,7 +39,7 @@ public function __invoke($url, array $subProtocols = [], array $headers = []) {
             $request = $this->generateRequest($url, $subProtocols, $headers);
             $uri = $request->getUri();
         } catch (\Exception $e) {
-            return new RejectedPromise($e);
+            return  reject($e);
         }
         $secure = 'wss' === substr($url, 0, 3);
         $connector = $this->_connector;