diff --git a/account_asset_management/tests/test_account_asset_management.py b/account_asset_management/tests/test_account_asset_management.py
index 984d858fe..4a0c3c683 100644
--- a/account_asset_management/tests/test_account_asset_management.py
+++ b/account_asset_management/tests/test_account_asset_management.py
@@ -445,8 +445,11 @@ class TestAssetManagement(SavepointCase):
         self.assertTrue(len(invoice.invoice_line_ids) > 0)
         line = invoice.invoice_line_ids[0]
         self.assertTrue(line.price_unit > 0.0)
-        line.quantity = 2
-        line.asset_profile_id = asset_profile
+        move_form = Form(invoice)
+        with move_form.invoice_line_ids.edit(0) as line_form:
+            line_form.quantity = 2
+            line_form.asset_profile_id = asset_profile
+        invoice = move_form.save()
         invoice.post()
         # I get all asset after invoice validation
         current_asset = self.env["account.asset"].search([])