diff --git a/src/Cache/Engine/MemcachedEngine.php b/src/Cache/Engine/MemcachedEngine.php
index 2c68b34ca40..5872cd6613f 100644
--- a/src/Cache/Engine/MemcachedEngine.php
+++ b/src/Cache/Engine/MemcachedEngine.php
@@ -173,7 +173,6 @@ public function init(array $config = [])
         }
 
         if ($this->_config['username'] !== null && $this->_config['password'] !== null) {
-            $sasl = method_exists($this->_Memcached, 'setSaslAuthData');
             if (!method_exists($this->_Memcached, 'setSaslAuthData')) {
                 throw new InvalidArgumentException(
                     'Memcached extension is not built with SASL support'