diff --git a/config.php b/config.php
index d3dd4418..7f062e40 100644
--- a/config.php
+++ b/config.php
@@ -1,18 +1,21 @@
 <?php
-/* Blessing Skin Server 数据库的名称 */
+/* Blessing Skin Server Database Name */
 define('DB_NAME', 'skin');
 
-/* MySQL 数据库用户名 */
+/* MySQL Username */
 define('DB_USER', 'root');
 
-/* MySQL 数据库密码 */
+/* MySQL Password */
 define('DB_PASSWD', 'root');
 
-/* MySQL 主机 */
+/* MySQL Host */
 define('DB_HOST', 'localhost');
 
-/* 盐，用于 token 验证，自行修改 */
+/* Salt for encrypting token, Change it to any random string */
 define('SALT', '9tvsh55d*s');
 
-/* 同一 IP 可注册的账户数 */
+/* Max amount of accounts per IP */
 define('REGS_PER_IP', 2);
+
+/* Do not change this */
+define('DIR', dirname(__FILE__));
diff --git a/includes/utils.class.php b/includes/utils.class.php
index 96779cbd..9623f56f 100644
--- a/includes/utils.class.php
+++ b/includes/utils.class.php
@@ -3,7 +3,7 @@
  * @Author: printempw
  * @Date:   2016-01-16 23:01:33
  * @Last Modified by:   prpr
- * @Last Modified time: 2016-02-03 15:52:39
+ * @Last Modified time: 2016-02-04 16:20:19
  */
 
 class utils
@@ -29,9 +29,9 @@ class utils
      * @return string $hash, sha256 hash of file
      */
     public static function upload($file) {
-        move_uploaded_file($file["tmp_name"], "./textures/tmp.png");
-        $hash = hash_file('sha256', "./textures/tmp.png");
-        rename("./textures/tmp.png", "./textures/".$hash);
+        move_uploaded_file($file["tmp_name"], DIR."/textures/tmp.png");
+        $hash = hash_file('sha256', DIR."/textures/tmp.png");
+        rename(DIR."/textures/tmp.png", DIR."/textures/".$hash);
         return $hash;
     }