diff --git a/l10n_it_withholding_tax/models/account.py b/l10n_it_withholding_tax/models/account.py
index 7477e0696980..bcec9dd7482d 100644
--- a/l10n_it_withholding_tax/models/account.py
+++ b/l10n_it_withholding_tax/models/account.py
@@ -258,6 +258,7 @@ def default_get(self, fields):
         return rec
 
     def _compute_payment_amount(self, invoices=None, currency=None):
+        raise "Dead code!"
         if not invoices:
             invoices = self.invoice_ids
         original_values = {}