diff --git a/account_permanent_lock_move/__init__.py b/account_permanent_lock_move/__init__.py
index 35e7c9600..0217b0f92 100755
--- a/account_permanent_lock_move/__init__.py
+++ b/account_permanent_lock_move/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 
 from . import models
 from . import wizard
diff --git a/account_permanent_lock_move/__manifest__.py b/account_permanent_lock_move/__manifest__.py
index 41b4c4ab4..613a235aa 100644
--- a/account_permanent_lock_move/__manifest__.py
+++ b/account_permanent_lock_move/__manifest__.py
@@ -1,12 +1,11 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 {
     "name": "Permanent Lock Move",
-    "version": "10.0.1.0.0",
+    "version": "11.0.1.0.0",
     "depends": ["account"],
     "author": "Camptocamp,Odoo Community Association (OCA)",
-    "website": "http://www.camptocamp.com/",
+    "website": 'https://github.com/OCA/account-financial-tools',
     "category": "Finance",
     "data": [
         "views/res_config_view.xml",
diff --git a/account_permanent_lock_move/models/__init__.py b/account_permanent_lock_move/models/__init__.py
index 8993bef01..8b1d2d84f 100644
--- a/account_permanent_lock_move/models/__init__.py
+++ b/account_permanent_lock_move/models/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 
 from . import account_move
 from . import company
diff --git a/account_permanent_lock_move/models/account_move.py b/account_permanent_lock_move/models/account_move.py
index 079f2c934..090f3315f 100644
--- a/account_permanent_lock_move/models/account_move.py
+++ b/account_permanent_lock_move/models/account_move.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from odoo import _, api, models
@@ -11,7 +10,8 @@ class AccountMove(models.Model):
     @api.multi
     def _check_lock_date(self):
         for move in self:
-            if move.date <= move.company_id.permanent_lock_date:
+            if move.company_id.permanent_lock_date \
+                    and move.date <= move.company_id.permanent_lock_date:
                 raise UserError(_(
                     "You cannot add/modify entries prior to and inclusive "
                     "of the permanent lock date."))
diff --git a/account_permanent_lock_move/models/company.py b/account_permanent_lock_move/models/company.py
index 252e734ad..e818be355 100644
--- a/account_permanent_lock_move/models/company.py
+++ b/account_permanent_lock_move/models/company.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from odoo import fields, models
diff --git a/account_permanent_lock_move/models/res_config.py b/account_permanent_lock_move/models/res_config.py
index cbc06be99..705112ea9 100644
--- a/account_permanent_lock_move/models/res_config.py
+++ b/account_permanent_lock_move/models/res_config.py
@@ -1,11 +1,10 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from odoo import api, fields, models
 
 
 class AccountConfigSettings(models.TransientModel):
-    _inherit = 'account.config.settings'
+    _inherit = 'res.config.settings'
 
     permanent_lock_date = fields.Date(
         string="Permanent Lock Date",
diff --git a/account_permanent_lock_move/static/description/icon.png b/account_permanent_lock_move/static/description/icon.png
deleted file mode 100644
index 3a0328b51..000000000
Binary files a/account_permanent_lock_move/static/description/icon.png and /dev/null differ
diff --git a/account_permanent_lock_move/tests/__init__.py b/account_permanent_lock_move/tests/__init__.py
index 117d3ecd2..420e2dfc4 100644
--- a/account_permanent_lock_move/tests/__init__.py
+++ b/account_permanent_lock_move/tests/__init__.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from . import test_permanent_lock
diff --git a/account_permanent_lock_move/tests/test_permanent_lock.py b/account_permanent_lock_move/tests/test_permanent_lock.py
index a1c75c610..7572973e1 100644
--- a/account_permanent_lock_move/tests/test_permanent_lock.py
+++ b/account_permanent_lock_move/tests/test_permanent_lock.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 import datetime
diff --git a/account_permanent_lock_move/views/res_config_view.xml b/account_permanent_lock_move/views/res_config_view.xml
index acc77dd5f..e1d6f9e9a 100644
--- a/account_permanent_lock_move/views/res_config_view.xml
+++ b/account_permanent_lock_move/views/res_config_view.xml
@@ -1,18 +1,18 @@
 <odoo>
-    <record id="view_account_config_settings_permanent_lock" model="ir.ui.view">
-        <field name="name">account settings permanent lock</field>
-        <field name="model">account.config.settings</field>
-        <field name="inherit_id" ref="account.view_account_config_settings"/>
+    <record id="res_config_settings_view_form" model="ir.ui.view">
+        <field name="model">res.config.settings</field>
+        <field name="inherit_id" ref="account.res_config_settings_view_form"/>
         <field name="arch" type="xml">
-            <xpath expr="//field[@name='fiscalyear_lock_date']/parent::div" position="after">
-                <div>
-                    <label for="permanent_lock_date"/>
-                    <field name="permanent_lock_date" readonly="1"/>
-                </div>
+            <div id="fiscalyear" position="attributes">
+                <attribute name="invisible">0</attribute>
+            </div>
+            <div id="fiscalyear" position="inside">
+                <label for="permanent_lock_date"/>
+                <field name="permanent_lock_date" readonly="1"/>
                 <div>
                     <button type="object" name="change_permanent_lock_date" string="Permanently Lock Entries" class="btn-primary"/>
                 </div>
-            </xpath>
+            </div>
         </field>
     </record>
 </odoo>
diff --git a/account_permanent_lock_move/wizard/__init__.py b/account_permanent_lock_move/wizard/__init__.py
index def3c56f1..20b45c2b6 100644
--- a/account_permanent_lock_move/wizard/__init__.py
+++ b/account_permanent_lock_move/wizard/__init__.py
@@ -1,3 +1,2 @@
-# -*- coding: utf-8 -*-
 
 from . import permanent_lock_date_wizard
diff --git a/account_permanent_lock_move/wizard/permanent_lock_date_wizard.py b/account_permanent_lock_move/wizard/permanent_lock_date_wizard.py
index 5502a5a7e..968beb3ca 100644
--- a/account_permanent_lock_move/wizard/permanent_lock_date_wizard.py
+++ b/account_permanent_lock_move/wizard/permanent_lock_date_wizard.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 # © 2016 Camptocamp SA (Matthieu Dietrich)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 from odoo import _, api, fields, models
diff --git a/account_permanent_lock_move/wizard/permanent_lock_date_wizard.xml b/account_permanent_lock_move/wizard/permanent_lock_date_wizard.xml
index 0ffbe0046..5192c58bf 100644
--- a/account_permanent_lock_move/wizard/permanent_lock_date_wizard.xml
+++ b/account_permanent_lock_move/wizard/permanent_lock_date_wizard.xml
@@ -1,5 +1,5 @@
 <odoo>
-    <record id="permanent_lock_date_wizard_form" model="ir.ui.view">
+    <record id="permanent_lock_date_wizard_view_form" model="ir.ui.view">
         <field name="name">permanent.lock.date.wizard.form</field>
         <field name="model">permanent.lock.date.wizard</field>
         <field name="type">form</field>