diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index c756301a762..866e25a4abd 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -958,13 +958,13 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
                 print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/layout/jquery.layout-latest'.$ext.'"></script>'."\n";
             }
             // jQuery jnotify
-            if (empty($conf->global->MAIN_DISABLE_JQUERY_JNOTIFY))
+            if (empty($conf->global->MAIN_DISABLE_JQUERY_JNOTIFY) && ! defined('DISABLE_JQUERY_JNOTIFY'))
             {
                 print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/jnotify/jquery.jnotify.min.js"></script>'."\n";
                 print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/jnotify.js"></script>'."\n";
             }
             // jQuery blockUI
-            if (! empty($conf->global->MAIN_USE_JQUERY_BLOCKUI))
+            if (! empty($conf->global->MAIN_USE_JQUERY_BLOCKUI) || defined('REQUIRE_JQUERY_BLOCKUI'))
             {
             	print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/includes/jquery/plugins/blockUI/jquery.blockUI.js"></script>'."\n";
             	print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/blockUI.js"></script>'."\n";