diff --git a/golem_member/__manifest__.py b/golem_member/__manifest__.py
index 6bc3578..9c73964 100644
--- a/golem_member/__manifest__.py
+++ b/golem_member/__manifest__.py
@@ -20,7 +20,7 @@
     'name': 'GOLEM non-profit members',
     'summary': 'Extends Odoo contacts for MJC',
     'description': 'Extends Odoo contacts for MJC',
-    'version': '10.0.1.2.0',
+    'version': '10.0.1.2.1',
     'category': 'GOLEM',
     'author': 'Fabien Bourgeois, Michel Dessenne',
     'license': 'AGPL-3',
diff --git a/golem_member/models/golem_member.py b/golem_member/models/golem_member.py
index f0e0052..2d37e68 100644
--- a/golem_member/models/golem_member.py
+++ b/golem_member/models/golem_member.py
@@ -134,7 +134,7 @@ class GolemMember(models.Model):
     def _compute_is_number_manual(self):
         conf = self.env['ir.config_parameter']
         is_num_man = (conf.get_param('golem_numberconfig_isautomatic') == '0')
-        self.write({'is_number_manual': is_num_man})
+        self.update({'is_number_manual': is_num_man})
 
     @api.multi
     def generate_number_perseason(self):
diff --git a/golem_member/views/golem_member_views.xml b/golem_member/views/golem_member_views.xml
index b1feb07..59ca76c 100644
--- a/golem_member/views/golem_member_views.xml
+++ b/golem_member/views/golem_member_views.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
-Copyright 2017 Fabien Bourgeois <fabien@yaltik.com>
+Copyright 2017-2018 Fabien Bourgeois <fabien@yaltik.com>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as published by
@@ -52,7 +52,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
                 <field name="number" readonly="True"
                   attrs="{'invisible': [('is_number_manual', '=', True)]}" />
                 <field name="number_manual"
-                  attrs="{'invisible': [('is_number_manual', '=', False)]}" />
+                  attrs="{'invisible': [('is_number_manual', '=', False)],
+                  'required': [('is_number_manual', '=', True)]}" />
               </group>
               <group>
                 <field name="gender" />