diff --git a/addons/l10n_it_edi/models/account_invoice.py b/addons/l10n_it_edi/models/account_invoice.py
index 865b389eb22..6dc4df7006a 100644
--- a/addons/l10n_it_edi/models/account_invoice.py
+++ b/addons/l10n_it_edi/models/account_invoice.py
@@ -253,7 +253,7 @@ class AccountMove(models.Model):
             'document_total': document_total,
             'representative': company.l10n_it_tax_representative_partner_id,
             'codice_destinatario': codice_destinatario,
-            'regime_fiscale': company.l10n_it_tax_system if not is_self_invoice else 'RF01',
+            'regime_fiscale': company.l10n_it_tax_system if not is_self_invoice else 'RF18',
             'is_self_invoice': is_self_invoice,
             'partner_bank': self.partner_bank_id,
             'format_date': format_date,
diff --git a/addons/l10n_it_edi/tests/expected_xmls/reverse_charge_bill.xml b/addons/l10n_it_edi/tests/expected_xmls/reverse_charge_bill.xml
index 9b5fc4e1c28..07d142e03ca 100644
--- a/addons/l10n_it_edi/tests/expected_xmls/reverse_charge_bill.xml
+++ b/addons/l10n_it_edi/tests/expected_xmls/reverse_charge_bill.xml
@@ -20,7 +20,7 @@
                 <Anagrafica>
                     <Denominazione>Alessi</Denominazione>
                 </Anagrafica>
-                <RegimeFiscale>RF01</RegimeFiscale>
+                <RegimeFiscale>RF18</RegimeFiscale>
             </DatiAnagrafici>
             <Sede>
                 <Indirizzo>Avenue Test rue </Indirizzo>