diff --git a/l10n_nl_xaf_auditfile_export/models/xaf_auditfile_export.py b/l10n_nl_xaf_auditfile_export/models/xaf_auditfile_export.py
index 1f9a84ccb..242b18a6a 100644
--- a/l10n_nl_xaf_auditfile_export/models/xaf_auditfile_export.py
+++ b/l10n_nl_xaf_auditfile_export/models/xaf_auditfile_export.py
@@ -272,6 +272,7 @@ def get_ob_sql_fragment(self):
     def get_ob_totals(self):
         """return totals of opening balance"""
         self.env.cr.execute(
+            # pylint: disable=sql-injection
             "select sum(l.balance), count(distinct a.id) " +
             self.get_ob_sql_fragment() +
             "and l.balance < 0"
@@ -282,6 +283,7 @@ def get_ob_totals(self):
             count=row[1] or 0,
         )
         self.env.cr.execute(
+            # pylint: disable=sql-injection
             "select sum(l.balance), count(distinct a.id) " +
             self.get_ob_sql_fragment() +
             "and l.balance > 0"
@@ -295,6 +297,7 @@ def get_ob_totals(self):
     def get_ob_lines(self):
         """return opening balance entries"""
         self.env.cr.execute(
+            # pylint: disable=sql-injection
             "select a.id, a.code, sum(l.balance) " +
             self.get_ob_sql_fragment() +
             "group by a.id, a.code",
diff --git a/l10n_nl_xaf_auditfile_export/tests/test_l10n_nl_xaf_auditfile_export.py b/l10n_nl_xaf_auditfile_export/tests/test_l10n_nl_xaf_auditfile_export.py
index 176f71acc..7d899c92a 100644
--- a/l10n_nl_xaf_auditfile_export/tests/test_l10n_nl_xaf_auditfile_export.py
+++ b/l10n_nl_xaf_auditfile_export/tests/test_l10n_nl_xaf_auditfile_export.py
@@ -8,6 +8,7 @@
 import os
 from zipfile import ZipFile
 
+
 from odoo.tests.common import TransactionCase
 from odoo.tools import mute_logger
 
@@ -21,7 +22,9 @@ def xaf_xpath(auditfile, query):
             remove_blank_text=True
         )
         root = etree.XML(bytes(contents, encoding='utf8'), parser=parser)
-        for element in root.xpath(query, namespaces={'a': 'http://www.auditfiles.nl/XAF/3.2'}):
+        for element in root.xpath(
+                query, namespaces={'a': 'http://www.auditfiles.nl/XAF/3.2'}
+        ):
             yield element
 
 
@@ -161,7 +164,10 @@ def test_07_opening_balance(self):
         record = self.env['xaf.auditfile.export'].create({})
 
         acc_receivable = self.env['account.account'].search([
-            ('user_type_id', '=', self.env.ref('account.data_account_type_receivable').id),
+            (
+                'user_type_id', '=',
+                self.env.ref('account.data_account_type_receivable').id
+            ),
         ], limit=1)
         acc_payable = self.env['account.account'].search([
             ('user_type_id', '=', self.env.ref('account.data_account_type_payable').id),
@@ -194,20 +200,25 @@ def test_07_opening_balance(self):
         def xaf_val(auditfile, xpath):
             return float(''.join(xaf_xpath(auditfile, xpath)))
 
-        total_credit = xaf_val(record.auditfile, '//a:openingBalance/a:totalCredit/text()')
+        total_credit = xaf_val(
+            record.auditfile, '//a:openingBalance/a:totalCredit/text()')
         self.assertEqual(total_credit, 42)
-        result = record.get_ob_totals()
-        total_debit = xaf_val(record.auditfile, '//a:openingBalance/a:totalDebit/text()')
+        total_debit = xaf_val(
+            record.auditfile, '//a:openingBalance/a:totalDebit/text()')
         self.assertEqual(total_debit, 0)
-        lines_count = xaf_val(record.auditfile, '//a:openingBalance/a:linesCount/text()')
+        lines_count = xaf_val(
+            record.auditfile, '//a:openingBalance/a:linesCount/text()')
         self.assertEqual(lines_count, 1)
 
         move_payable.post()
         record = self.env['xaf.auditfile.export'].create({})
         record.button_generate()
-        total_credit = xaf_val(record.auditfile, '//a:openingBalance/a:totalCredit/text()')
+        total_credit = xaf_val(
+            record.auditfile, '//a:openingBalance/a:totalCredit/text()')
         self.assertEqual(total_credit, 42)
-        total_debit = xaf_val(record.auditfile, '//a:openingBalance/a:totalDebit/text()')
+        total_debit = xaf_val(
+            record.auditfile, '//a:openingBalance/a:totalDebit/text()')
         self.assertEqual(total_debit, 4242)
-        lines_count = xaf_val(record.auditfile, '//a:openingBalance/a:linesCount/text()')
+        lines_count = xaf_val(
+            record.auditfile, '//a:openingBalance/a:linesCount/text()')
         self.assertEqual(lines_count, 2)