diff --git a/mailcatcher_menu/data/data.xml b/mailcatcher_menu/data/data.xml
index 2c38ea2..e506423 100644
--- a/mailcatcher_menu/data/data.xml
+++ b/mailcatcher_menu/data/data.xml
@@ -1,5 +1,5 @@
 <odoo>
     <data>
-        <function model="ir.config_parameter" name="mailcatcher_url"/>
+        <function model="ir.config_parameter" name="_mailcatcher_url"/>
     </data>
 </odoo>
diff --git a/mailcatcher_menu/models/mailcatcher_menu.py b/mailcatcher_menu/models/mailcatcher_menu.py
index 574c3af..6b29bfb 100644
--- a/mailcatcher_menu/models/mailcatcher_menu.py
+++ b/mailcatcher_menu/models/mailcatcher_menu.py
@@ -9,8 +9,9 @@ _logger = logging.getLogger(__name__)
 class IrActionUrl(models.Model):
     _inherit = "ir.config_parameter"
 
+    @api.model
     #def init(self):
-    def mailcatcher_url(self):
+    def _mailcatcher_url(self):
         parameters = self.env['ir.config_parameter'].search([('key','=', 'web.base.url')])
         if parameters:
             parameter = parameters[0]