diff --git a/conf/app.php b/conf/app.php
index 3a2fe52..c00214b 100644
--- a/conf/app.php
+++ b/conf/app.php
@@ -3,7 +3,7 @@
  * Config
  */
 return array(
-    'default_timezone' => 'Asia/HonKong',   //timezone
+    'default_timezone' => 'Asia/Shanghai',   //timezone
 
     //文档站皮肤
     //'content_directory' => 'content/',      //directory of contents in /www/
diff --git a/themes/pagedirectory/controller/SiteController.php b/themes/pagedirectory/controller/SiteController.php
index 126c9ec..098337d 100644
--- a/themes/pagedirectory/controller/SiteController.php
+++ b/themes/pagedirectory/controller/SiteController.php
@@ -44,6 +44,7 @@ Class SiteController extends Controller {
 
         //排序
         if (!empty($menus_sorted) && !empty($menus)) {
+            //一级目录菜单排序
             $menu_dirs = array_column($menus, 'directory');
             $names = array_replace(array_flip($menus_sorted), array_flip($menu_dirs));
             if (!empty($names)) {
@@ -57,7 +58,7 @@ Class SiteController extends Controller {
                 $menus = $arr;
             }
 
-            //dirTree排序
+            //dirTree一级目录排序
             $sorted_dirs = array_column($menus, 'directory');
             $tree_dirs = array_column($dirTree, 'directory');
             $names = array_replace(array_flip($sorted_dirs), array_flip($tree_dirs));
@@ -67,7 +68,7 @@ Class SiteController extends Controller {
                 $arr = [];
                 foreach($sorted_dirs as $name) {
                     foreach($dirTree as $index => $item) {
-                        if ($item['directory'] == $name) {
+                        if (!empty($item['directory']) && $item['directory'] == $name) {
                             array_push($arr, $item);
                             break;
                         }
diff --git a/www/index.php b/www/index.php
index a3b845a..1fddbb2 100644
--- a/www/index.php
+++ b/www/index.php
@@ -2,7 +2,7 @@
 /* All php controller enter from here */
 $start_time = microtime(true);        //for time cost
 $config = require_once __DIR__ . '/../conf/app.php';
-$default_timezone = !empty($config['default_timezone']) ? $config['default_timezone'] : 'Asia/HongKong';
+$default_timezone = !empty($config['default_timezone']) ? $config['default_timezone'] : 'Hongkong';
 date_default_timezone_set($default_timezone);
 $config['start_time'] = $start_time;