diff --git a/addons/base_setup/res_config.py b/addons/base_setup/res_config.py
index 78324067dbe..7e85925b1c9 100644
--- a/addons/base_setup/res_config.py
+++ b/addons/base_setup/res_config.py
@@ -54,7 +54,7 @@ class sale_config_settings(osv.osv_memory):
     _inherit = 'res.config.settings'
     _columns = {
         'module_crm': fields.boolean('CRM'),
-        'module_plugin_thunderbird': fields.boolean('enable Thunderbird plugin.',
+        'module_plugin_thunderbird': fields.boolean('enable Thunderbird plugin',
             help="""The plugin allows you archive email and its attachments to the selected
                 OpenERP objects. You can select a partner, or a lead and
                 attach the selected mail as a .eml file in