diff --git a/golem_activity_registration/__manifest__.py b/golem_activity_registration/__manifest__.py
index 1122895..a947633 100644
--- a/golem_activity_registration/__manifest__.py
+++ b/golem_activity_registration/__manifest__.py
@@ -18,7 +18,7 @@
 {
     'name': 'GOLEM Activity Member Registrations',
     'summary': 'GOLEM Activities Member Registrations management',
-    'version': '10.0.1.6.2',
+    'version': '10.0.1.6.3',
     'category': 'GOLEM',
     'author': 'Fabien Bourgeois, Michel Dessenne',
     'license': 'AGPL-3',
diff --git a/golem_activity_registration/views/golem_activity_registration_views.xml b/golem_activity_registration/views/golem_activity_registration_views.xml
index 18fbf50..d94092b 100644
--- a/golem_activity_registration/views/golem_activity_registration_views.xml
+++ b/golem_activity_registration/views/golem_activity_registration_views.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-Copyright 2017-2018 Fabien Bourgeois <fabien@yaltik.com>
+Copyright 2017-2019 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
@@ -53,7 +53,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
           <field name="activity_id" domain="[('is_default', '=', True)]"
             invisible="not context.get('activity_show', 1)" />
           <field name="activity_price" string="Base price" sum="Total"
-            invisible="not context.get('activity_show', 1)" />
+            invisible="not context.get('activity_show', 1)" readonly="1" />
         </tree>
       </field>
     </record>