diff --git a/mail_activity_reminder/__manifest__.py b/mail_activity_reminder/__manifest__.py
index f686193b3..486db9908 100644
--- a/mail_activity_reminder/__manifest__.py
+++ b/mail_activity_reminder/__manifest__.py
@@ -4,7 +4,7 @@
 
 {
     "name": "Mail Activity Reminder",
-    "version": "13.0.1.0.0",
+    "version": "16.0.1.0.0",
     "category": "Discuss",
     "website": "https://github.com/OCA/social",
     "author": "CorporateHub, Odoo Community Association (OCA)",
diff --git a/mail_activity_reminder/models/mail_activity.py b/mail_activity_reminder/models/mail_activity.py
index 329b46e5b..243f91b0f 100644
--- a/mail_activity_reminder/models/mail_activity.py
+++ b/mail_activity_reminder/models/mail_activity.py
@@ -22,7 +22,6 @@ class MailActivity(models.Model):
         string="Last reminder (local)",
     )
     deadline = fields.Datetime(
-        string="Deadline",
         compute="_compute_deadline",
         compute_sudo=True,
         store=True,
@@ -99,22 +98,20 @@ class MailActivity(models.Model):
             )
 
     def action_notify(self):
-        super().action_notify()
+        res = super().action_notify()
         utc_now = fields.Datetime.now().replace(tzinfo=UTC)
         for activity in self:
             if activity.last_reminder_local:
                 continue
             tz = timezone(activity.user_id.sudo().tz or "UTC")
             activity.last_reminder_local = utc_now.astimezone(tz).replace(tzinfo=None)
+        return res
 
     def action_remind(self):
         """
         Group reminders by user and type and send them together
         """
         MailThread = self.env["mail.thread"]
-        message_activity_assigned = self.env.ref(
-            "mail_activity_reminder.message_activity_assigned"
-        )
         utc_now = fields.Datetime.now().replace(tzinfo=UTC)
         for user in self.mapped("user_id"):
             activities = self.filtered(lambda activity: activity.user_id == user)
@@ -123,9 +120,9 @@ class MailActivity(models.Model):
 
             subject = _("Some activities you are assigned too expire soon.")
 
-            body = message_activity_assigned.render(
+            body = self.env["ir.qweb"]._render(
+                "mail_activity_reminder.message_activity_assigned",
                 dict(activities=activities, model_description="Activities"),
-                engine="ir.qweb",
                 minimal_qcontext=True,
             )
             MailThread.message_notify(
diff --git a/mail_activity_reminder/models/mail_activity_type.py b/mail_activity_reminder/models/mail_activity_type.py
index 2199351b2..e9e806d98 100644
--- a/mail_activity_reminder/models/mail_activity_type.py
+++ b/mail_activity_reminder/models/mail_activity_type.py
@@ -10,7 +10,6 @@ class MailActivityType(models.Model):
     _inherit = "mail.activity.type"
 
     reminders = fields.Char(
-        string="Reminders",
         help=(
             "A non-digit-separated list of offsets (in days) when reminders"
             ' should be fired: e.g. 0 means "on the deadline day" while'
diff --git a/mail_activity_reminder/tests/test_mail_activity_reminder.py b/mail_activity_reminder/tests/test_mail_activity_reminder.py
index 3c2235afd..2954de185 100644
--- a/mail_activity_reminder/tests/test_mail_activity_reminder.py
+++ b/mail_activity_reminder/tests/test_mail_activity_reminder.py
@@ -9,7 +9,7 @@ from freezegun import freeze_time
 from odoo.tests import common
 
 
-class TestMailActivityReminder(common.SavepointCase):
+class TestMailActivityReminder(common.TransactionCase):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
@@ -114,7 +114,7 @@ class TestMailActivityReminder(common.SavepointCase):
             self.assertEqual(activities, activity)
             activities.action_remind()
 
-        activity.active = False
+        activity.unlink()
         with freeze_time(self.now + relativedelta(days=5)):
             activities = self.MailActivity._get_activities_to_remind()
             self.assertFalse(activities)