diff --git a/Layout/default/header.php b/Layout/default/header.php
index 9313717d4..bdede3d4e 100644
--- a/Layout/default/header.php
+++ b/Layout/default/header.php
@@ -19,7 +19,7 @@
         <link href="<?=self::getResourcePath()?>assets/css/bootstrap-select.min.css" rel="stylesheet" type="text/css" />
         <link href="<?=self::getResourcePath()?>css/bootstrap-datepicker3.min.css" rel="stylesheet" type="text/css" />
         <link href="<?=self::getResourcePath()?>plugins/summernote/summernote-bs4.css" rel="stylesheet" type="text/css" />
-        <link href="<?=self::getResourcePath()?>datatables/datatables.min.css?<?=date('U')?>" rel="stylesheet" type="text/css" />
+        <link href="<?=self::getResourcePath()?>datatables/datatables.min.css?<?= MFAPPFILE_VERSION ?>" rel="stylesheet" type="text/css" />
         
         <?php if(isset($additionalCSS) && is_array($additionalCSS) && count($additionalCSS)): ?>
           <?php foreach($additionalCSS as $css): ?>
@@ -38,7 +38,7 @@
         <script type="text/javascript" src="<?=self::getResourcePath()?>js/bootstrap.min.js"></script>
         <script type="text/javascript" src="<?=self::getResourcePath()?>assets/js/bootstrap-select.min.js"></script>
         <script type="text/javascript" src="<?=self::getResourcePath()?>js/bootstrap-autocomplete.min.js"></script>
-        <script type="text/javascript" src="<?=self::getResourcePath()?>datatables/datatables.min.js?<?=date('U')?>"></script>
+        <script type="text/javascript" src="<?=self::getResourcePath()?>datatables/datatables.min.js?<?= MFAPPFILE_VERSION ?>"></script>
         
         <?php if(isset($additionalJS) && is_array($additionalJS) && count($additionalJS)): ?>
           <?php foreach($additionalJS as $js): ?>