diff --git a/source/static/js/ui/invoices.js b/source/static/js/ui/invoices.js
index c610391..51bf5ac 100644
--- a/source/static/js/ui/invoices.js
+++ b/source/static/js/ui/invoices.js
@@ -531,12 +531,13 @@ var grid_preinvoices_cols = [
     {id: "id", header:"ID", hidden:true},
     {id: "folio", header: ["Folio", {content: "numberFilter"}], adjust: "data",
         sort:"int", css: "cell_right"},
-    {id: "fecha", header: ["Fecha y Hora"],
-        adjust: "data", sort: "date"},
+    {id: "fecha", header: ["Fecha y Hora"], adjust: "data", sort: "string",
+        footer: 'Total'},
     {id: "tipo_comprobante", header: ["Tipo", {content: "selectFilter"}],
         adjust: 'header', sort: 'string'},
-    {id: 'total_mn', header: ['Total M.N.'], width: 150,
-        sort: 'int', format: webix.i18n.priceFormat, css: 'right'},
+    {id: 'total_mn', header: ['Total M.N.'], width: 150, sort: 'int',
+        format: webix.i18n.priceFormat, css: 'right',
+        footer: {content: 'summColumn', css: 'right'}},
     {id: "cliente", header: ["Razón Social", {content: "selectFilter"}],
         fillspace:true, sort:"string"},
     {id: 'pdf', header: 'PDF', adjust: 'data', template: get_icon('pdf')},