diff --git a/src/Stash/Driver/Sub/Memcache.php b/src/Stash/Driver/Sub/Memcache.php
index 30526ed4..eef649bd 100644
--- a/src/Stash/Driver/Sub/Memcache.php
+++ b/src/Stash/Driver/Sub/Memcache.php
@@ -65,7 +65,7 @@ public function set($key, $value, $expire = null)
             return true;
         }
 
-        return $this->memcached->set($key, array('data' => $value, 'expiration' => $expire), null, $expire);
+        return $this->memcached->set($key, array('data' => $value, 'expiration' => $expire), false, $expire);
     }
 
     /**