diff --git a/src/SessionHandler.php b/src/SessionHandler.php
index 165106b..93bfe9f 100644
--- a/src/SessionHandler.php
+++ b/src/SessionHandler.php
@@ -60,7 +60,6 @@ public function open($savePath, $sessionID)
      */
     public function close()
     {
-        $this->db = null;
         return true;
     }