diff --git a/mail_activity_partner/__manifest__.py b/mail_activity_partner/__manifest__.py
index 25365c9..867bda8 100644
--- a/mail_activity_partner/__manifest__.py
+++ b/mail_activity_partner/__manifest__.py
@@ -3,7 +3,7 @@
 {
     "name": "Mail Activity Partner",
     "summary": "Add Partner to Activities",
-    "version": "14.0.1.0.0",
+    "version": "15.0.1.0.0",
     "development_status": "Beta",
     "category": "Social Network",
     "website": "https://github.com/OCA/social",
diff --git a/mail_activity_partner/readme/CONTRIBUTORS.rst b/mail_activity_partner/readme/CONTRIBUTORS.rst
index 5e81a9b..dd53919 100644
--- a/mail_activity_partner/readme/CONTRIBUTORS.rst
+++ b/mail_activity_partner/readme/CONTRIBUTORS.rst
@@ -1 +1,2 @@
 * Adrià Gil Sorribes (adria.gil@forgeflow.com)
+* Joan Mateu Jordi (joan.mateu@forgeflow.com)
diff --git a/mail_activity_partner/tests/test_mail_activity_partner.py b/mail_activity_partner/tests/test_mail_activity_partner.py
index 30c7c1a..45b23ec 100644
--- a/mail_activity_partner/tests/test_mail_activity_partner.py
+++ b/mail_activity_partner/tests/test_mail_activity_partner.py
@@ -1,9 +1,9 @@
 # Copyright 2018 ForgeFlow S.L.
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-from odoo.tests.common import SavepointCase
+from odoo.tests.common import TransactionCase
 
 
-class TestMailActivityPartner(SavepointCase):
+class TestMailActivityPartner(TransactionCase):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
@@ -32,15 +32,16 @@ class TestMailActivityPartner(SavepointCase):
             }
         )
 
-        cls.partner_ir_model = cls.env["ir.model"]._get("res.partner")
+        cls.partner_model = cls.env["ir.model"]._get("res.partner")
 
         activity_type_model = cls.env["mail.activity.type"]
         cls.activity1 = activity_type_model.create(
             {
                 "name": "Initial Contact",
                 "delay_count": 5,
+                "delay_unit": "days",
                 "summary": "ACT 1 : Presentation, barbecue, ... ",
-                "res_model_id": cls.partner_ir_model.id,
+                "res_model": cls.partner_model.model,
             }
         )
         cls.activity2 = activity_type_model.create(
@@ -48,7 +49,7 @@ class TestMailActivityPartner(SavepointCase):
                 "name": "Call for Demo",
                 "delay_count": 6,
                 "summary": "ACT 2 : I want to show you my ERP !",
-                "res_model_id": cls.partner_ir_model.id,
+                "res_model": cls.partner_model.model,
             }
         )
 
@@ -78,7 +79,7 @@ class TestMailActivityPartner(SavepointCase):
                     "activity_type_id": self.activity1.id,
                     "note": "Partner activity 1.",
                     "res_id": self.partner_01.id,
-                    "res_model_id": self.partner_ir_model.id,
+                    "res_model_id": self.partner_model.id,
                     "user_id": self.user_admin.id,
                 }
             )
@@ -92,7 +93,7 @@ class TestMailActivityPartner(SavepointCase):
                     "activity_type_id": self.activity2.id,
                     "note": "Partner activity 10.",
                     "res_id": self.partner_10.id,
-                    "res_model_id": self.partner_ir_model.id,
+                    "res_model_id": self.partner_model.id,
                     "user_id": self.employee.id,
                 }
             )
diff --git a/mail_activity_partner/views/mail_activity_views.xml b/mail_activity_partner/views/mail_activity_views.xml
index 8c03daa..c568664 100644
--- a/mail_activity_partner/views/mail_activity_views.xml
+++ b/mail_activity_partner/views/mail_activity_views.xml
@@ -54,7 +54,7 @@
         <field name="model">mail.activity</field>
         <field name="inherit_id" ref="mail_activity_board.mail_activity_view_search" />
         <field name="arch" type="xml">
-            <xpath expr='//field[@name="res_model_id"]' position='before'>
+            <xpath expr='//field[@name="res_model"]' position='before'>
                 <field name="partner_id" />
                 <field name="commercial_partner_id" />
             </xpath>