diff --git a/addons/delivery/models/sale_order_line.py b/addons/delivery/models/sale_order_line.py
index 1864ebc1572..f08305b0859 100644
--- a/addons/delivery/models/sale_order_line.py
+++ b/addons/delivery/models/sale_order_line.py
@@ -46,3 +46,8 @@ class SaleOrderLine(models.Model):
 
         undeletable_lines = super()._check_line_unlink()
         return undeletable_lines.filtered(lambda line: not line.is_delivery)
+
+    def _compute_pricelist_item_id(self):
+        delivery_lines = self.filtered('is_delivery')
+        super(SaleOrderLine, self - delivery_lines)._compute_pricelist_item_id()
+        delivery_lines.pricelist_item_id = False
diff --git a/addons/delivery/tests/test_delivery_cost.py b/addons/delivery/tests/test_delivery_cost.py
index 92a1d965885..afadffd40ac 100644
--- a/addons/delivery/tests/test_delivery_cost.py
+++ b/addons/delivery/tests/test_delivery_cost.py
@@ -168,6 +168,7 @@ class TestDeliveryCost(common.TransactionCase):
                 'applied_on': '0_product_variant',
                 'product_id': self.normal_delivery.product_id.id,
             })],
+            'discount_policy': 'without_discount',
         })
 
         # Create sales order with Normal Delivery Charges