diff --git a/partner_contact_department/__manifest__.py b/partner_contact_department/__manifest__.py
index b0fa03cec..206e931da 100644
--- a/partner_contact_department/__manifest__.py
+++ b/partner_contact_department/__manifest__.py
@@ -4,22 +4,19 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 {
-    'name': 'Partner Contact Department',
+    "name": "Partner Contact Department",
     "summary": "Assign contacts to departments",
-    'version': '12.0.1.0.0',
-    'category': 'Customer Relationship Management',
-    'author': 'Tecnativa, '
-              'Odoo Community Association (OCA)',
+    "version": "13.0.1.0.0",
+    "category": "Customer Relationship Management",
+    "author": "Tecnativa, " "Odoo Community Association (OCA)",
     "license": "AGPL-3",
-    'website': 'https://github.com/OCA/partner-contact',
+    "website": "https://github.com/OCA/partner-contact",
     "application": False,
-    'depends': [
-        'contacts',
-    ],
-    'data': [
-        'security/ir.model.access.csv',
-        'views/res_partner_department_view.xml',
-        'views/res_partner_view.xml',
+    "depends": ["contacts"],
+    "data": [
+        "security/ir.model.access.csv",
+        "views/res_partner_department_view.xml",
+        "views/res_partner_view.xml",
     ],
     "installable": True,
 }
diff --git a/partner_contact_department/migrations/12.0.1.0.0/post-migration.py b/partner_contact_department/migrations/12.0.1.0.0/post-migration.py
deleted file mode 100644
index c16403627..000000000
--- a/partner_contact_department/migrations/12.0.1.0.0/post-migration.py
+++ /dev/null
@@ -1,8 +0,0 @@
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
-
-from openupgradelib import openupgrade
-
-
-@openupgrade.migrate(use_env=True)
-def migrate(env, version):
-    env['res.partner.department']._parent_store_compute()
diff --git a/partner_contact_department/models/res_partner.py b/partner_contact_department/models/res_partner.py
index 84423d360..fa0b264fc 100644
--- a/partner_contact_department/models/res_partner.py
+++ b/partner_contact_department/models/res_partner.py
@@ -2,45 +2,35 @@
 # © 2016 Tecnativa S.L. - Vicent Cubells
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import api, fields, models, _
+from odoo import _, api, fields, models
 from odoo.exceptions import ValidationError
 
 
 class ResPartner(models.Model):
-    _inherit = 'res.partner'
+    _inherit = "res.partner"
 
     department_id = fields.Many2one(
-        "res.partner.department",
-        "Department",
-        oldname="department"
+        "res.partner.department", "Department", oldname="department"
     )
 
 
 class ResPartnerDepartment(models.Model):
-    _name = 'res.partner.department'
+    _name = "res.partner.department"
     _order = "parent_path"
     _parent_order = "name"
     _parent_store = True
     _description = "Department"
 
-    name = fields.Char(
-        required=True,
-        translate=True
-    )
+    name = fields.Char(required=True, translate=True)
     parent_id = fields.Many2one(
-        "res.partner.department",
-        "Parent department",
-        ondelete='restrict'
+        "res.partner.department", "Parent department", ondelete="restrict"
     )
     child_ids = fields.One2many(
-        "res.partner.department",
-        "parent_id",
-        "Child departments"
+        "res.partner.department", "parent_id", "Child departments"
     )
     parent_path = fields.Char(index=True)
 
-    @api.constrains('parent_id')
+    @api.constrains("parent_id")
     def _check_parent_id(self):
         if not self._check_recursion():
-            raise ValidationError(
-                _('Error! You cannot create recursive departments.'))
+            raise ValidationError(_("Error! You cannot create recursive departments."))
diff --git a/partner_contact_department/readme/CONTRIBUTORS.rst b/partner_contact_department/readme/CONTRIBUTORS.rst
index 2e8045a46..720837fec 100644
--- a/partner_contact_department/readme/CONTRIBUTORS.rst
+++ b/partner_contact_department/readme/CONTRIBUTORS.rst
@@ -5,3 +5,4 @@
 * Vicent Cubells <vicent.cubells@tecnativa.com>
 * David Vidal <david.vidal@tecnativa.com>
 * Nikul Chaudhary <nikulchaudhary2112@gmail.com>
+* Harald Panten <harald.panten@sygel.es>
diff --git a/partner_contact_department/tests/test_recursion.py b/partner_contact_department/tests/test_recursion.py
index bcda4aadb..925152cf0 100644
--- a/partner_contact_department/tests/test_recursion.py
+++ b/partner_contact_department/tests/test_recursion.py
@@ -1,29 +1,26 @@
 # © 2016 Tecnativa - Vicent Cubells
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl-3.0).
+from odoo.exceptions import UserError
 from odoo.tests import common
-from odoo.exceptions import ValidationError
 
 
 class TestRecursion(common.SavepointCase):
-
     @classmethod
     def setUpClass(cls):
         super(TestRecursion, cls).setUpClass()
-        cls.department_obj = cls.env['res.partner.department']
+        cls.department_obj = cls.env["res.partner.department"]
 
         # Instances
-        cls.dpt1 = cls.department_obj.create({'name': 'Dpt. 1'})
-        cls.dpt2 = cls.department_obj.create({
-            'name': 'Dep. 2',
-            'parent_id': cls.dpt1.id
-        })
+        cls.dpt1 = cls.department_obj.create({"name": "Dpt. 1"})
+        cls.dpt2 = cls.department_obj.create(
+            {"name": "Dep. 2", "parent_id": cls.dpt1.id}
+        )
 
     def test_recursion(self):
         """ Testing recursion """
-        self.dpt3 = self.department_obj.create({
-            'name': 'Dep. 3',
-            'parent_id': self.dpt2.id
-        })
+        self.dpt3 = self.department_obj.create(
+            {"name": "Dep. 3", "parent_id": self.dpt2.id}
+        )
         # Creating a parent's child department using dpt1.
-        with self.assertRaises(ValidationError):
-            self.dpt1.write(vals={'parent_id': self.dpt3.id})
+        with self.assertRaises(UserError):
+            self.dpt1.write(vals={"parent_id": self.dpt3.id})
diff --git a/partner_contact_department/views/res_partner_department_view.xml b/partner_contact_department/views/res_partner_department_view.xml
index 316afc629..facc35dd6 100644
--- a/partner_contact_department/views/res_partner_department_view.xml
+++ b/partner_contact_department/views/res_partner_department_view.xml
@@ -1,41 +1,36 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+<?xml version="1.0" encoding="utf-8" ?>
 <odoo>
-
     <record id="res_partner_department_action" model="ir.actions.act_window">
         <field name="name">Departments</field>
         <field name="res_model">res.partner.department</field>
-        <field name="view_type">form</field>
         <field name="view_mode">tree</field>
     </record>
-
     <record id="res_partner_department_tree_view" model="ir.ui.view">
         <field name="name">CRM department tree</field>
         <field name="model">res.partner.department</field>
         <field name="arch" type="xml">
             <tree string="Departments" editable="top">
-                <field name="name"/>
-                <field name="parent_id"/>
+                <field name="name" />
+                <field name="parent_id" />
             </tree>
         </field>
     </record>
-
     <record id="res_partner_department_form_view" model="ir.ui.view">
         <field name="name">CRM department form</field>
         <field name="model">res.partner.department</field>
         <field name="arch" type="xml">
             <form>
                 <group>
-                    <field name="name"/>
-                    <field name="parent_id"/>
-                    <field name="child_ids"/>
+                    <field name="name" />
+                    <field name="parent_id" />
+                    <field name="child_ids" />
                 </group>
             </form>
         </field>
     </record>
-
-    <menuitem action="res_partner_department_action"
-              id="menu_res_partner_department"
-              parent="contacts.res_partner_menu_config"/>
-
+    <menuitem
+        action="res_partner_department_action"
+        id="menu_res_partner_department"
+        parent="contacts.res_partner_menu_config"
+    />
 </odoo>
diff --git a/partner_contact_department/views/res_partner_view.xml b/partner_contact_department/views/res_partner_view.xml
index b5833571c..5e67228c1 100644
--- a/partner_contact_department/views/res_partner_view.xml
+++ b/partner_contact_department/views/res_partner_view.xml
@@ -1,44 +1,48 @@
-<?xml version="1.0" encoding="utf-8"?>
-
+<?xml version="1.0" encoding="utf-8" ?>
 <odoo>
-
     <record model="ir.ui.view" id="view_partner_form_department">
         <field name="name">Partner form with department</field>
         <field name="model">res.partner</field>
-        <field name="inherit_id" ref="base.view_partner_form"/>
+        <field name="inherit_id" ref="base.view_partner_form" />
         <field name="arch" type="xml">
             <xpath expr="//sheet/group//field[@name='function']" position="after">
-                <field name="department_id"
-                       placeholder="Department"
-                       attrs="{'invisible': [('is_company','=', True)]}"
-                       options='{"no_open": True}'/>
+                <field
+                    name="department_id"
+                    placeholder="Department"
+                    attrs="{'invisible': [('is_company','=', True)]}"
+                    options='{"no_open": True}'
+                />
             </xpath>
-            <xpath expr="//field[@name='child_ids']/form//field[@name='function']"
-                   position="after">
-                <field name="is_company" invisible="True"/>
-                <field name="department_id"
-                       placeholder="Department"
-                       attrs="{'invisible': [('is_company','=', True)]}"
-                       options='{"no_open": True}'/>
+            <xpath
+                expr="//field[@name='child_ids']/form//field[@name='function']"
+                position="after"
+            >
+                <field name="is_company" invisible="True" />
+                <field
+                    name="department_id"
+                    placeholder="Department"
+                    attrs="{'invisible': [('is_company','=', True)]}"
+                    options='{"no_open": True}'
+                />
             </xpath>
         </field>
     </record>
-
     <record model="ir.ui.view" id="view_res_partner_filter_department">
         <field name="name">Partner search with department</field>
         <field name="model">res.partner</field>
-        <field name="inherit_id" ref="base.view_res_partner_filter"/>
+        <field name="inherit_id" ref="base.view_res_partner_filter" />
         <field name="arch" type="xml">
             <field name="category_id" position="after">
-                <field name="department_id"/>
+                <field name="department_id" />
             </field>
             <filter name="salesperson" position="after">
-                <filter name="department"
-                        string="Department"
-                        domain="[('is_company', '=', False)]"
-                        context="{'group_by': 'department_id'}"/>
+                <filter
+                    name="department"
+                    string="Department"
+                    domain="[('is_company', '=', False)]"
+                    context="{'group_by': 'department_id'}"
+                />
             </filter>
         </field>
     </record>
-
 </odoo>