diff --git a/library/think/cache/driver/Memcached.php b/library/think/cache/driver/Memcached.php
index e0d809a8..ea4778d9 100644
--- a/library/think/cache/driver/Memcached.php
+++ b/library/think/cache/driver/Memcached.php
@@ -84,7 +84,7 @@ class Memcached
             $expire = $this->options['expire'];
         }
         $name = $this->options['prefix'] . $name;
-        if ($this->handler->set($name, $value, 0, $expire)) {
+        if ($this->handler->set($name, $value, $expire)) {
             if ($this->options['length'] > 0) {
                 // 记录缓存队列
                 $queue = $this->handler->get('__info__');
diff --git a/library/think/session/driver/Memcached.php b/library/think/session/driver/Memcached.php
index 25384305..bccfdda0 100644
--- a/library/think/session/driver/Memcached.php
+++ b/library/think/session/driver/Memcached.php
@@ -92,7 +92,7 @@ class Memcached extends SessionHandler
      */
     public function write($sessID, $sessData)
     {
-        return $this->handler->set($this->config['session_name'] . $sessID, $sessData, 0, $this->config['expire']);
+        return $this->handler->set($this->config['session_name'] . $sessID, $sessData, $this->config['expire']);
     }
 
     /**