diff --git a/l10n_br_account/wizards/account_invoice_refund.py b/l10n_br_account/wizards/account_invoice_refund.py
index 9b4d3ab35821..1393ee5587ed 100644
--- a/l10n_br_account/wizards/account_invoice_refund.py
+++ b/l10n_br_account/wizards/account_invoice_refund.py
@@ -41,7 +41,8 @@ def compute_refund(self, mode="refund"):
 
                 if (
                     not self.force_fiscal_operation_id
-                    and not invoice.fiscal_operation_id.return_operation_id
+                    and
+                    not invoice.fiscal_operation_id.return_fiscal_operation_id
                 ):
                     raise UserError(
                         _(
@@ -53,7 +54,8 @@ def compute_refund(self, mode="refund"):
 
                 invoice.fiscal_operation_id = (
                     self.force_fiscal_operation_id.id
-                    or invoice.fiscal_operation_id.return_operation_id.id
+                    or
+                    invoice.fiscal_operation_id.return_fiscal_operation_id.id
                 )
 
                 invoice_values = {
@@ -81,10 +83,11 @@ def compute_refund(self, mode="refund"):
 
                     line.fiscal_operation_id = (
                         self.force_fiscal_operation_id.id
-                        or line.fiscal_operation_id.return_operation_id
+                        or
+                        line.fiscal_operation_id.return_fiscal_operation_id
                     )
 
-                    line._onchange_operation_id()
+                    line._onchange_fiscal_operation_id()
 
                     line_values = {
                         "fiscal_operation_id": line.fiscal_operation_id.id,