diff --git a/addons/account/models/account_invoice.py b/addons/account/models/account_invoice.py
index 6f99fc1d9a6..189a175e94a 100644
--- a/addons/account/models/account_invoice.py
+++ b/addons/account/models/account_invoice.py
@@ -507,7 +507,7 @@ class AccountInvoice(models.Model):
             query = """UPDATE %(table_name)s
                           SET %(column_name)s = md5(md5(random()::varchar || id::varchar) || clock_timestamp()::varchar)::uuid::varchar
                         WHERE %(column_name)s IS NULL
-                    """ % {'table_name': self._name, 'column_name': column_name}
+                    """ % {'table_name': self._table, 'column_name': column_name}
             self.env.cr.execute(query)
 
     def _generate_access_token(self):
diff --git a/addons/sale/models/sale.py b/addons/sale/models/sale.py
index 7633f462301..c4f335f5d4b 100644
--- a/addons/sale/models/sale.py
+++ b/addons/sale/models/sale.py
@@ -308,7 +308,7 @@ class SaleOrder(models.Model):
             query = """UPDATE %(table_name)s
                           SET %(column_name)s = md5(md5(random()::varchar || id::varchar) || clock_timestamp()::varchar)::uuid::varchar
                         WHERE %(column_name)s IS NULL
-                    """ % {'table_name': self._name, 'column_name': column_name}
+                    """ % {'table_name': self._table, 'column_name': column_name}
             self.env.cr.execute(query)
 
     def _generate_access_token(self):