diff --git a/base.php b/base.php
index fdbd5d9098..cbe288bf37 100644
--- a/base.php
+++ b/base.php
@@ -9,7 +9,7 @@
 // | Author: liu21st <liu21st@gmail.com>
 // +----------------------------------------------------------------------
 
-define('THINK_VERSION', '5.0.5beta');
+define('THINK_VERSION', '5.0.5');
 define('THINK_START_TIME', microtime(true));
 define('THINK_START_MEM', memory_get_usage());
 define('EXT', '.php');
diff --git a/helper.php b/helper.php
index d5946fb275..543942bef1 100644
--- a/helper.php
+++ b/helper.php
@@ -14,7 +14,6 @@
 //-------------------------
 
 use think\Cache;
-use think\Collection;
 use think\Config;
 use think\Cookie;
 use think\Db;
@@ -24,6 +23,7 @@
 use think\Lang;
 use think\Loader;
 use think\Log;
+use think\Model;
 use think\Request;
 use think\Response;
 use think\Session;
@@ -571,10 +571,15 @@ function load_relation($resultSet, $relation)
     /**
      * 数组转换为数据集对象
      * @param array $resultSet 数据集数组
-     * @return Collection
+     * @return \think\model\Collection|\think\Collection
      */
     function collection($resultSet)
     {
-        return new Collection($resultSet);
+        $item = current($resultSet);
+        if ($item instanceof Model) {
+            return \think\model\Collection::make($resultSet);
+        } else {
+            return \think\Collection::make($resultSet);
+        }
     }
 }