diff --git a/addons/sale_project/models/project.py b/addons/sale_project/models/project.py
index 695803f4200..384e56e5031 100644
--- a/addons/sale_project/models/project.py
+++ b/addons/sale_project/models/project.py
@@ -281,8 +281,8 @@ class Project(models.Model):
         } for sol_read in sols.with_context(with_price_unit=True).read(['display_name', 'product_uom_qty', 'qty_delivered', 'qty_invoiced', 'product_uom'])]
 
     def _get_sale_items_domain(self, additional_domain=None):
-        sale_orders = self._get_sale_order_items().sudo().order_id
-        domain = [('order_id', 'in', sale_orders.ids), ('is_downpayment', '=', False), ('state', 'in', ['sale', 'done']), ('display_type', '=', False)]
+        sale_line_ids = self._fetch_sale_order_item_ids()
+        domain = [('id', 'in', sale_line_ids), ('is_downpayment', '=', False), ('state', 'in', ['sale', 'done']), ('display_type', '=', False)]
         if additional_domain:
             domain = expression.AND([domain, additional_domain])
         return domain
diff --git a/addons/sale_project/tests/test_sale_project.py b/addons/sale_project/tests/test_sale_project.py
index 7f3ab2d47e1..b026f522a79 100644
--- a/addons/sale_project/tests/test_sale_project.py
+++ b/addons/sale_project/tests/test_sale_project.py
@@ -164,7 +164,7 @@ class TestSaleProject(TransactionCase):
         self.assertIn(task.sale_line_id, self.project_global._get_sale_order_items())
         self.assertEqual(self.project_global._get_sale_orders(), sale_order | sale_order_2)
 
-        sale_order_lines = sale_order.order_line + sale_line_1_order_2  # exclude the Section and Note Sales Order Items
+        sale_order_lines = so_line_order_task_in_global + sale_line_1_order_2  # exclude the Section and Note Sales Order Items, only choose the ones related to project_global
         sale_items_data = self.project_global._get_sale_items(with_action=False)
         self.assertEqual(sale_items_data['total'], len(sale_order_lines))
         expected_sale_line_dict = {