diff --git a/addons/sale_loyalty/models/sale_order.py b/addons/sale_loyalty/models/sale_order.py
index 96294052763..54fe6b81c0f 100644
--- a/addons/sale_loyalty/models/sale_order.py
+++ b/addons/sale_loyalty/models/sale_order.py
@@ -146,7 +146,7 @@ class SaleOrder(models.Model):
             'points_cost': cost,
             'reward_identifier_code': _generate_random_reward_code(),
             'product_uom': product.uom_id.id,
-            'sequence': max(self.order_line.filtered(lambda x: not x.is_reward_line).mapped('sequence')) + 1,
+            'sequence': max(self.order_line.filtered(lambda x: not x.is_reward_line).mapped('sequence'), default=10) + 1,
             'tax_id': [(Command.CLEAR, 0, 0)] + [(Command.LINK, tax.id, False) for tax in taxes]
         }]