diff --git a/js/list.js b/js/list.js
index 89b02e1..814da20 100644
--- a/js/list.js
+++ b/js/list.js
@@ -102,15 +102,14 @@ function changeListItem(){
 
 function checkItem() {
   var dataId = $(this).data("id");
+  var dataIdSelector = (`[data-id='${dataId}']`);
   $.post({
     url: "api/list/check",
     data: {
-      // function: "check",
       id: dataId,
       status: $(this).prop("checked")
     },
     success: function () {
-      var dataIdSelector = (`[data-id='${dataId}']`);
       var color = $(dataIdSelector).data("color");
       $(dataIdSelector).parent().parent().removeClass("bg-danger");
       $(dataIdSelector).parent().parent().find(".dropdown-menu-button").removeClass("btn-danger");
diff --git a/php/connect.php b/php/connect.php
index ebd09da..4260e5d 100644
--- a/php/connect.php
+++ b/php/connect.php
@@ -6,6 +6,7 @@
     $passwd = $CONFIG['passwd'],
     $database = $CONFIG['database']
   );
+  $mysqli->set_charset("utf8");
   if (!is_null($mysqli->connect_error))
   {
       header("Location: /error/DBConnFailed");