diff --git a/addons/website_quote/controllers/main.py b/addons/website_quote/controllers/main.py
index f1f2d7da657..d7f804a1abe 100644
--- a/addons/website_quote/controllers/main.py
+++ b/addons/website_quote/controllers/main.py
@@ -149,7 +149,7 @@ class sale_quote(http.Controller):
 
         OrderLine = request.env['sale.order.line'].sudo().create(vals)
         OrderLine._compute_tax_id()
-        Option.write({'line_id': OrderLine})
+        Option.write({'line_id': OrderLine.id})
         return werkzeug.utils.redirect("/quote/%s/%s#pricing" % (Order.id, token))
 
     # note dbo: website_sale code