diff --git a/l10n_it_fatturapa_in_rc/models/account_invoice.py b/l10n_it_fatturapa_in_rc/models/account_invoice.py
index 59fd055771a1..d24d570919e0 100644
--- a/l10n_it_fatturapa_in_rc/models/account_invoice.py
+++ b/l10n_it_fatturapa_in_rc/models/account_invoice.py
@@ -1,17 +1,17 @@
-from odoo import _, models
+from odoo import _, api, models
 from odoo.tools import float_compare
 
 
 class InvoiceLine(models.Model):
     _inherit = "account.move.line"
 
-    def _set_rc_flag(self, invoice):
-        self.ensure_one()
+    @api.depends("move_id", "move_id.fiscal_position_id", "tax_ids")
+    def _compute_rc_flag(self):
         if "fatturapa.attachment.in" in self.env.context.get("active_model", []):
             # this means we are importing an e-invoice,
             # so RC flag is already set, where needed
             return
-        return super(InvoiceLine, self)._set_rc_flag(invoice)
+        super()._compute_rc_flag()
 
 
 class Invoice(models.Model):
diff --git a/l10n_it_fatturapa_in_rc/readme/CONTRIBUTORS.rst b/l10n_it_fatturapa_in_rc/readme/CONTRIBUTORS.rst
index ea72e0dcd84b..9e1c095f22b4 100644
--- a/l10n_it_fatturapa_in_rc/readme/CONTRIBUTORS.rst
+++ b/l10n_it_fatturapa_in_rc/readme/CONTRIBUTORS.rst
@@ -1,3 +1,7 @@
 * Sergio Corato <info@efatto.it>
 * Lorenzo Battistini <https://github.com/eLBati>
 * Marco Colombo <https://github.com/TheMule71>
+
+* `Ooops <https://www.ooops404.com>`_:
+
+   * Giovanni Serra <giovanni@gslab.it>