diff --git a/account_move_line_sale_info/tests/test_account_move_line_sale_info.py b/account_move_line_sale_info/tests/test_account_move_line_sale_info.py
index f5df5d89..000310c5 100644
--- a/account_move_line_sale_info/tests/test_account_move_line_sale_info.py
+++ b/account_move_line_sale_info/tests/test_account_move_line_sale_info.py
@@ -203,7 +203,7 @@ class TestAccountMoveLineSaleInfo(common.TransactionCase):
         )
         payment.create_invoices()
         invoice = sale.invoice_ids[0]
-        invoice.post()
+        invoice._post()
 
         for aml in invoice.line_ids:
             if aml.product_id == so_line.product_id and aml.move_id: