diff --git a/addons/mail/models/mail_activity.py b/addons/mail/models/mail_activity.py
index 83feb875a66..57b60ab95d9 100644
--- a/addons/mail/models/mail_activity.py
+++ b/addons/mail/models/mail_activity.py
@@ -5,8 +5,6 @@ from datetime import date, datetime, timedelta
 import pytz
 
 from odoo import api, exceptions, fields, models, _
-from odoo.osv import expression
-from odoo.tools import pycompat
 
 
 class MailActivityType(models.Model):
diff --git a/addons/test_mail/tests/common.py b/addons/test_mail/tests/common.py
index b526dce2906..641863a3bcb 100644
--- a/addons/test_mail/tests/common.py
+++ b/addons/test_mail/tests/common.py
@@ -1,5 +1,4 @@
 # -*- coding: utf-8 -*-
-from json import dumps, loads
 
 import json