diff --git a/addons/website_sale/models/website.py b/addons/website_sale/models/website.py
index 6bdb8a6fba3..387751c76b5 100644
--- a/addons/website_sale/models/website.py
+++ b/addons/website_sale/models/website.py
@@ -311,7 +311,7 @@ class Website(models.Model):
 
         if sale_order_id:
             sale_order_sudo = SaleOrder.browse(sale_order_id).exists()
-        elif not self.env.user._is_public():
+        elif self.env.user and not self.env.user._is_public():
             sale_order_sudo = self.env.user.partner_id.last_website_so_id
             if sale_order_sudo:
                 available_pricelists = self.get_pricelist_available()