diff --git a/includes/classes/Database/Database.class.php b/includes/classes/Database/Database.class.php
index f201f062..bccb8976 100644
--- a/includes/classes/Database/Database.class.php
+++ b/includes/classes/Database/Database.class.php
@@ -3,7 +3,7 @@
  * @Author: printempw
  * @Date:   2016-02-02 21:59:06
  * @Last Modified by:   printempw
- * @Last Modified time: 2016-03-18 18:43:11
+ * @Last Modified time: 2016-03-18 18:47:20
  */
 
 namespace Database;
@@ -29,7 +29,7 @@ class Database implements EncryptInterface, SyncInterface
         if ($conn->connect_error)
             Utils::showErrorPage($conn->connect_errno,
                 "无法连接至 MySQL 服务器。请确认 config.php 中的配置是否正确：".$conn->connect_error);
-        if (self::checkTableExist($conn))
+        if (!self::checkTableExist($conn))
             Utils::showErrorPage(-1, "数据库中不存在 ".DB_PREFIX."users 或 ".DB_PREFIX."options 表。请先运行 /admin/install.php 进行安装。");
         if (!is_dir(BASE_DIR."/textures/"))
             Utils::showErrorPage(-1, "textures 文件夹不存在。请先运行 /admin/install.php 进行安装，或者手动放置一个。");
diff --git a/includes/session.inc.php b/includes/session.inc.php
index 1eb0c907..34068487 100644
--- a/includes/session.inc.php
+++ b/includes/session.inc.php
@@ -3,11 +3,12 @@
  * @Author: prpr
  * @Date:   2016-02-06 23:18:49
  * @Last Modified by:   printempw
- * @Last Modified time: 2016-03-18 17:46:22
+ * @Last Modified time: 2016-03-18 18:45:48
  */
 session_start();
 $dir = dirname(dirname(__FILE__));
 require "$dir/includes/autoloader.php";
+Database\Database::checkConfig();
 
 if(isset($_COOKIE['uname']) && isset($_COOKIE['token'])) {
     $_SESSION['uname'] = $_COOKIE['uname'];