diff --git a/admin/install.php b/admin/install.php
index 1abaad01..8b3234cf 100644
--- a/admin/install.php
+++ b/admin/install.php
@@ -2,14 +2,15 @@
 /**
  * @Author: printempw
  * @Date:   2016-01-16 23:01:33
- * @Last Modified by:   prpr
- * @Last Modified time: 2016-02-08 00:33:32
+ * @Last Modified by:   printempw
+ * @Last Modified time: 2016-03-05 19:22:44
  *
  * Create tables automatically
  */
 
 $dir = dirname(dirname(__FILE__));
 require "$dir/includes/autoload.inc.php";
+header('Content-type: text/html; charset=utf-8');
 
 echo "<style>body { font-family: Courier, 'Microsoft Yahei', 'Microsoft Jhenghei', sans-serif; }</style>";
 
diff --git a/includes/Utils.class.php b/includes/Utils.class.php
index d9089689..e7a77643 100644
--- a/includes/Utils.class.php
+++ b/includes/Utils.class.php
@@ -2,8 +2,8 @@
 /**
  * @Author: printempw
  * @Date:   2016-01-16 23:01:33
- * @Last Modified by:   prpr
- * @Last Modified time: 2016-02-05 21:59:56
+ * @Last Modified by:   printempw
+ * @Last Modified time: 2016-03-05 19:21:47
  */
 
 class Utils
@@ -18,7 +18,7 @@ class Utils
     public static function raise($errno = -1, $msg = "Error occured.") {
         $exception['errno'] = $errno;
         $exception['msg'] = $msg;
-        header('Content-type: application/json');
+        header('Content-type: application/json; charset=utf-8');
         die(json_encode($exception));
     }