diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index 188c8dc193a..a68995e5eeb 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -140,7 +140,7 @@ jQuery(function($){
 		dayNamesShort: tradDaysShort,
 		dayNamesMin: tradDaysMin,
 		weekHeader: '<?php echo $langs->trans("Week"); ?>',
-		dateFormat: '<?php echo $langs->trans("FormatDateShortJQuery"); ?>',
+		dateFormat: '<?php echo $langs->trans("FormatDateShortJQuery"); ?>',	/* Note dd/mm/yy means year on 4 digit in jquery format */
 		firstDay: <?php echo (isset($conf->global->MAIN_START_WEEK)?$conf->global->MAIN_START_WEEK:'1'); ?>,
 		isRTL: <?php echo ($langs->trans("DIRECTION")=='rtl'?'true':'false'); ?>,
 		showMonthAfterYear: false,  	/* TODO add specific to country	*/