diff --git a/modules/carrier_carriage/sale.py b/modules/carrier_carriage/sale.py
index f0aaae50b4..b44eade414 100644
--- a/modules/carrier_carriage/sale.py
+++ b/modules/carrier_carriage/sale.py
@@ -121,7 +121,7 @@ class Line(metaclass=PoolMeta):
             for shipment in self.sale.shipments:
                 if (shipment.state == 'done'
                         and shipment.id not in shipment_cost_invoiced):
-                    invoice = self.sale._get_invoice_sale()
+                    invoice = self.sale._get_invoice()
                     for carriage in shipment.carriages:
                         # XXX: self is not necessary linked to carriage
                         invoice_line = carriage.get_cost_sale_invoice_line(
diff --git a/modules/sale/sale.py b/modules/sale/sale.py
index dfab797bea..fd232ce2ab 100644
--- a/modules/sale/sale.py
+++ b/modules/sale/sale.py
@@ -971,7 +971,7 @@ class Sale(
             sale.total_amount_cache = sale.total_amount
         cls.save(sales)
 
-    def _get_invoice_sale(self):
+    def _get_invoice(self):
         'Return invoice'
         pool = Pool()
         Invoice = pool.get('account.invoice')
@@ -1002,7 +1002,7 @@ class Sale(
         if not invoice_lines:
             return
 
-        invoice = self._get_invoice_sale()
+        invoice = self._get_invoice()
         if getattr(invoice, 'lines', None):
             invoice_lines = list(invoice.lines) + invoice_lines
         invoice.lines = invoice_lines
diff --git a/modules/sale_advance_payment/sale.py b/modules/sale_advance_payment/sale.py
index 242d0e170e..f26ca35f4a 100644
--- a/modules/sale_advance_payment/sale.py
+++ b/modules/sale_advance_payment/sale.py
@@ -216,7 +216,7 @@ class AdvancePaymentCondition(ModelSQL, ModelView):
         return super().copy(conditions, default)
 
     def create_invoice(self):
-        invoice = self.sale._get_invoice_sale()
+        invoice = self.sale._get_invoice()
         if self.invoice_delay is not None:
             invoice.invoice_date = self.sale.sale_date + self.invoice_delay
         invoice.payment_term = None
diff --git a/modules/sale_invoice_date/sale.py b/modules/sale_invoice_date/sale.py
index b88654c087..7f3c88ca28 100644
--- a/modules/sale_invoice_date/sale.py
+++ b/modules/sale_invoice_date/sale.py
@@ -119,8 +119,8 @@ class Sale(metaclass=PoolMeta):
     def _invoice_term_date(self):
         return
 
-    def _get_invoice_sale(self):
-        invoice = super()._get_invoice_sale()
+    def _get_invoice(self):
+        invoice = super()._get_invoice()
         if self.invoice_term:
             invoice.invoice_date = self.invoice_term.get_date(
                 date=self._invoice_term_date)
diff --git a/modules/sale_invoice_grouping/sale.py b/modules/sale_invoice_grouping/sale.py
index 022eb6885e..6563b769e9 100644
--- a/modules/sale_invoice_grouping/sale.py
+++ b/modules/sale_invoice_grouping/sale.py
@@ -43,14 +43,14 @@ class Sale(metaclass=PoolMeta):
                 )
         return invoice_domain
 
-    def _get_invoice_sale(self):
+    def _get_invoice(self):
         transaction = Transaction()
         context = transaction.context
-        invoice = super()._get_invoice_sale()
+        invoice = super()._get_invoice()
         if (not context.get('skip_grouping', False)
                 and self.invoice_grouping_method):
             with transaction.set_context(skip_grouping=True):
-                invoice = self._get_invoice_sale()
+                invoice = self._get_invoice()
             Invoice = invoice.__class__
             domain = self._get_grouped_invoice_domain(invoice)
             order = self._get_grouped_invoice_order()
diff --git a/modules/sale_shipment_cost/sale.py b/modules/sale_shipment_cost/sale.py
index c064acbe4b..4802f9eeda 100644
--- a/modules/sale_shipment_cost/sale.py
+++ b/modules/sale_shipment_cost/sale.py
@@ -434,7 +434,7 @@ class Line(metaclass=PoolMeta):
                 if (shipment.state == 'done'
                         and shipment.id not in shipment_cost_invoiced):
                     invoice_line = shipment.get_cost_sale_invoice_line(
-                        self.sale._get_invoice_sale(), origin=self)
+                        self.sale._get_invoice(), origin=self)
                     if invoice_line:
                         lines.append(invoice_line)
                         shipment_cost_invoiced.append(shipment.id)