diff --git a/routes/admin.js b/routes/admin.js
index 54a94c7..b556cb1 100644
--- a/routes/admin.js
+++ b/routes/admin.js
@@ -410,7 +410,7 @@ router.post('/product/insert', common.restrict, (req, res) => {
                     res.redirect('/admin/product/new');
                 }else{
                     // get the new ID
-                    let newId = newDoc.insertedIds;
+                    let newId = newDoc.insertedIds[0];
 
                     // add to lunr index
                     common.indexProducts(req.app)