diff --git a/htdocs/core/js/blockUI.js b/htdocs/core/js/blockUI.js
index b5b9e86072d..64eb9472836 100644
--- a/htdocs/core/js/blockUI.js
+++ b/htdocs/core/js/blockUI.js
@@ -94,7 +94,7 @@ $(document).ready(function() {
 			css: {
 				border: 'none',
 				padding: '15px',
-				background: '#000 url(/theme/eldy/img/working2.gif) no-repeat 10px center',
+				background: '#000 url(' +  indicatorBlockUI + ') no-repeat 10px center',
 				'-webkit-border-radius': '10px',
 				'-moz-border-radius': '10px',
 				'border-radius': '10px',
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 4fa01b4f116..ce793f0ffad 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -968,6 +968,9 @@ function top_htmlhead($head, $title='', $disablejs=0, $disablehead=0, $arrayofjs
             if (! empty($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">'."\n";
+            	print 'var indicatorBlockUI = \''.DOL_URL_ROOT."/theme/".$conf->theme."/img/working2.gif".'\';'."\n";
+            	print '</script>'."\n";
             	print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/blockUI.js"></script>'."\n";
             }
             // Flot