diff --git a/src/Factory.php b/src/Factory.php
index 2ec4d79..94dcc6e 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -22,7 +22,6 @@ public function __construct(LoopInterface $loop, Resolver $resolver = null)
 
     public function createClient($address)
     {
-        $factory = $this;
         $loop = $this->loop;
 
         return $this->resolveAddress($address)->then(function ($address) use ($loop) {
@@ -37,7 +36,6 @@ public function createClient($address)
 
     public function createServer($address)
     {
-        $factory = $this;
         $loop = $this->loop;
 
         return $this->resolveAddress($address)->then(function ($address) use ($loop) {