diff --git a/System/Abstracts/Pool.php b/System/Abstracts/Pool.php
index c2b47ad9..ef9cab17 100644
--- a/System/Abstracts/Pool.php
+++ b/System/Abstracts/Pool.php
@@ -128,7 +128,7 @@ abstract class Pool extends Component
 	public function push($name, $client)
 	{
 		$this->_items[$name]->push([time(), $client]);
-		unset($client);
+		$this->debug('release connect.' . $this->hasItem($name));
 	}