diff --git a/addons/mail/models/mail_mail.py b/addons/mail/models/mail_mail.py
index aa58dbb9240..86d8c8a478d 100644
--- a/addons/mail/models/mail_mail.py
+++ b/addons/mail/models/mail_mail.py
@@ -434,7 +434,7 @@ class MailMail(models.Model):
                 # To avoid sending twice the same email, provoke the failure earlier
                 mail.write({
                     'state': 'exception',
-                    'failure_reason': _('Error without exception. Probably due do sending an email without computed recipients.'),
+                    'failure_reason': _('Error without exception. Probably due to sending an email without computed recipients.'),
                 })
                 # Update notification in a transient exception state to avoid concurrent
                 # update in case an email bounces while sending all emails related to current
@@ -445,7 +445,7 @@ class MailMail(models.Model):
                     ('notification_status', 'not in', ('sent', 'canceled'))
                 ])
                 if notifs:
-                    notif_msg = _('Error without exception. Probably due do concurrent access update of notification records. Please see with an administrator.')
+                    notif_msg = _('Error without exception. Probably due to concurrent access update of notification records. Please see with an administrator.')
                     notifs.sudo().write({
                         'notification_status': 'exception',
                         'failure_type': 'unknown',
diff --git a/addons/test_mail/tests/test_mail_mail.py b/addons/test_mail/tests/test_mail_mail.py
index 347ea413a8a..a23b0f22e74 100644
--- a/addons/test_mail/tests/test_mail_mail.py
+++ b/addons/test_mail/tests/test_mail_mail.py
@@ -244,7 +244,7 @@ class TestMailMail(TestMailCommon):
             mail.write({'email_to': email_to})
             with self.mock_mail_gateway():
                 mail.send(raise_exception=False)
-            self.assertIn('Error without exception. Probably due do sending an email without computed recipients.', mail.failure_reason)
+            self.assertIn('Error without exception. Probably due to sending an email without computed recipients.', mail.failure_reason)
             self.assertFalse(mail.failure_type, 'Mail: missing email_to: no failure type, should be updated')
             self.assertEqual(mail.state, 'exception')
             if email_to == ' ':
@@ -261,7 +261,7 @@ class TestMailMail(TestMailCommon):
             mail.write({'email_to': email_to})
             with self.mock_mail_gateway():
                 mail.send(raise_exception=False)
-            self.assertIn('Error without exception. Probably due do sending an email without computed recipients.', mail.failure_reason)
+            self.assertIn('Error without exception. Probably due to sending an email without computed recipients.', mail.failure_reason)
             self.assertFalse(mail.failure_type, 'Mail: invalid email_to: no failure type, should be updated')
             self.assertEqual(mail.state, 'exception')
             self.assertEqual(notification.failure_type, failure_type, 'Mail: invalid email_to: missing instead of invalid')
@@ -322,7 +322,7 @@ class TestMailMail(TestMailCommon):
             notification.write({'res_partner_id': partner.id})
             with self.mock_mail_gateway():
                 mail.send(raise_exception=False)
-            self.assertEqual(mail.failure_reason, 'Error without exception. Probably due do sending an email without computed recipients.')
+            self.assertEqual(mail.failure_reason, 'Error without exception. Probably due to sending an email without computed recipients.')
             self.assertFalse(mail.failure_type, 'Mail: void recipient partner: no failure type, should be updated')
             self.assertEqual(mail.state, 'exception')
             self.assertEqual(notification.failure_type, 'mail_email_invalid', 'Mail: void recipient partner: should be missing, not invalid')
@@ -335,7 +335,7 @@ class TestMailMail(TestMailCommon):
             notification.write({'res_partner_id': partner.id})
             with self.mock_mail_gateway():
                 mail.send(raise_exception=False)
-            self.assertEqual(mail.failure_reason, 'Error without exception. Probably due do sending an email without computed recipients.')
+            self.assertEqual(mail.failure_reason, 'Error without exception. Probably due to sending an email without computed recipients.')
             self.assertFalse(mail.failure_type, 'Mail: invalid recipient partner: no failure type, should be updated')
             self.assertEqual(mail.state, 'exception')
             self.assertEqual(notification.failure_type, 'mail_email_invalid')