diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 72f9e4646c8..55ae5fef891 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1145,7 +1145,7 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
     		</script>';
 		}
 
-		if ($conf->global->MAIN_MENU_USE_JQUERY_ACCORDION)
+		if (! empty($conf->global->MAIN_MENU_USE_JQUERY_ACCORDION))
 		{
 			print "\n".'<script type="text/javascript">
 					jQuery(document).ready(function () {