diff --git a/plugin/jquery-ui/datepicker.php b/plugin/jquery-ui/datepicker.php
index 6c5a3a9e1..f351816bc 100644
--- a/plugin/jquery-ui/datepicker.php
+++ b/plugin/jquery-ui/datepicker.php
@@ -1,11 +1,11 @@
 <?php
 if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
 
-add_stylesheet('<link type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/base/jquery-ui.css" rel="stylesheet" />', 0);
+add_stylesheet('<link type="text/css" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/base/jquery-ui.css" rel="stylesheet" />', 0);
 add_stylesheet('<link type="text/css" href="'.G5_PLUGIN_URL.'/jquery-ui/style.css">', 0);
 ?>
 
-<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/jquery-ui.min.js"></script>
+<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/jquery-ui.min.js"></script>
 <script>
 jQuery(function($){
     $.datepicker.regional["ko"] = {