diff --git a/lib/Cake/Cache/Engine/MemcachedEngine.php b/lib/Cake/Cache/Engine/MemcachedEngine.php
index f910ffbf4..710a4d385 100644
--- a/lib/Cake/Cache/Engine/MemcachedEngine.php
+++ b/lib/Cake/Cache/Engine/MemcachedEngine.php
@@ -130,6 +130,7 @@ class MemcachedEngine extends CacheEngine {
 					__d('cake_dev', 'Memcached extension is not build with SASL support')
 				);
 			}
+			$this->_Memcached->setOption(Memcached::OPT_BINARY_PROTOCOL, true);
 			$this->_Memcached->setSaslAuthData($this->settings['login'], $this->settings['password']);
 		}