diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt
index f7d8e4b953..170ac31691 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/admin/aqbudgets.tt
@@ -52,7 +52,7 @@ var MSG_PARENT_BENEATH_BUDGET = "- " + _("New budget-parent is beneath budget")
 
     function add_user(borrowernumber, borrowername) {
         var ids = $("#budget_users_id").val().split(':');
-        if(borrowernumber && ids.indexOf(borrowernumber) == -1) {
+        if(borrowernumber && ids.indexOf(borrowernumber.toString()) == -1) {
             var li = '<li id="user_' + borrowernumber + '">'
                 + '<a href="/cgi-bin/koha/members/moremember.pl?borrowernumber='
                 + borrowernumber + '">' + borrowername + '</a> '