diff --git a/extend/base/admin/service/AdminUpdateServiceBase.php b/extend/base/admin/service/AdminUpdateServiceBase.php
index ef21c9f..0057289 100644
--- a/extend/base/admin/service/AdminUpdateServiceBase.php
+++ b/extend/base/admin/service/AdminUpdateServiceBase.php
@@ -37,7 +37,7 @@ class AdminUpdateServiceBase
 
     public function __construct($type = 'ulthon_admin')
     {
-        if ($type == 'ulthon_admin') {
+        if ($type == 'ulthon_admin' || $type == null) {
             $this->useRepo = self::REPO;
             $this->useVersion = Version::VERSION;
         } else {