diff --git a/addons/sale_expense/models/__init__.py b/addons/sale_expense/models/__init__.py
index 598d0341d6d..8a3abae39bd 100644
--- a/addons/sale_expense/models/__init__.py
+++ b/addons/sale_expense/models/__init__.py
@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from . import account_move_line
 from . import hr_expense
 from . import hr_expense_sheet
 from . import hr_expense_split
-from . import sale_order
 from . import product_template
-from . import account_move
+from . import sale_order
diff --git a/addons/sale_expense/models/account_move.py b/addons/sale_expense/models/account_move_line.py
similarity index 94%
rename from addons/sale_expense/models/account_move.py
rename to addons/sale_expense/models/account_move_line.py
index c2e90b800a0..03263720556 100644
--- a/addons/sale_expense/models/account_move.py
+++ b/addons/sale_expense/models/account_move_line.py
@@ -32,8 +32,7 @@ class AccountMoveLine(models.Model):
 
     def _sale_prepare_sale_line_values(self, order, price):
         # Add expense quantity to sales order line and update the sales order price because it will be charged to the customer in the end.
-        self.ensure_one()
         res = super()._sale_prepare_sale_line_values(order, price)
         if self.expense_id:
-            res.update({'product_uom_qty': self.expense_id.quantity})
+            res['product_uom_qty'] = self.expense_id.quantity
         return res
diff --git a/addons/sale_expense_margin/models/__init__.py b/addons/sale_expense_margin/models/__init__.py
index f41f60b3a11..ac1d552c24d 100644
--- a/addons/sale_expense_margin/models/__init__.py
+++ b/addons/sale_expense_margin/models/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from . import account_move
+from . import account_move_line
 from . import sale_order_line
diff --git a/addons/sale_expense_margin/models/account_move.py b/addons/sale_expense_margin/models/account_move_line.py
similarity index 100%
rename from addons/sale_expense_margin/models/account_move.py
rename to addons/sale_expense_margin/models/account_move_line.py