diff --git a/mail_tracking_mailgun/i18n/es.po b/mail_tracking_mailgun/i18n/es.po
index acfa4035d..e147a9edb 100644
--- a/mail_tracking_mailgun/i18n/es.po
+++ b/mail_tracking_mailgun/i18n/es.po
@@ -102,7 +102,6 @@ msgstr "La información del evento ha caducado"
 #. module: mail_tracking_mailgun
 #: model:ir.model,name:mail_tracking_mailgun.model_ir_mail_server
 #, fuzzy
-#| msgid "ir.mail_server"
 msgid "Mail Server"
 msgstr "ir.mail_server"
 
diff --git a/mail_tracking_mailgun/i18n/hr.po b/mail_tracking_mailgun/i18n/hr.po
index 15573cde3..c59b612b8 100644
--- a/mail_tracking_mailgun/i18n/hr.po
+++ b/mail_tracking_mailgun/i18n/hr.po
@@ -94,7 +94,6 @@ msgstr ""
 #. module: mail_tracking_mailgun
 #: model:ir.model,name:mail_tracking_mailgun.model_ir_mail_server
 #, fuzzy
-#| msgid "ir.mail_server"
 msgid "Mail Server"
 msgstr "ir.mail_server"
 
diff --git a/mail_tracking_mailgun/i18n/it.po b/mail_tracking_mailgun/i18n/it.po
index 07fd3ee0d..ecc83532b 100644
--- a/mail_tracking_mailgun/i18n/it.po
+++ b/mail_tracking_mailgun/i18n/it.po
@@ -94,7 +94,6 @@ msgstr ""
 #. module: mail_tracking_mailgun
 #: model:ir.model,name:mail_tracking_mailgun.model_ir_mail_server
 #, fuzzy
-#| msgid "ir.mail_server"
 msgid "Mail Server"
 msgstr "ir.mail_server"
 
diff --git a/mail_tracking_mailgun/i18n/nl_NL.po b/mail_tracking_mailgun/i18n/nl_NL.po
index 814f76229..d0ee004b5 100644
--- a/mail_tracking_mailgun/i18n/nl_NL.po
+++ b/mail_tracking_mailgun/i18n/nl_NL.po
@@ -94,7 +94,6 @@ msgstr ""
 #. module: mail_tracking_mailgun
 #: model:ir.model,name:mail_tracking_mailgun.model_ir_mail_server
 #, fuzzy
-#| msgid "ir.mail_server"
 msgid "Mail Server"
 msgstr "ir.mail_server"
 
diff --git a/mail_tracking_mailgun/tests/test_mailgun.py b/mail_tracking_mailgun/tests/test_mailgun.py
index f56285023..835be391d 100644
--- a/mail_tracking_mailgun/tests/test_mailgun.py
+++ b/mail_tracking_mailgun/tests/test_mailgun.py
@@ -2,7 +2,7 @@
 # Copyright 2017 Tecnativa - David Vidal
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-import mock
+from unittest import mock
 
 from odoo.exceptions import UserError, ValidationError
 from odoo.tests.common import TransactionCase