diff --git a/runbot/data/runbot_data.xml b/runbot/data/runbot_data.xml
index adef8dc3..14d918f9 100644
--- a/runbot/data/runbot_data.xml
+++ b/runbot/data/runbot_data.xml
@@ -103,8 +103,6 @@ admin_passwd=running_master_password</field>
         <field name="active" eval="False"/>
         <field name="interval_number">10</field>
         <field name="interval_type">seconds</field>
-        <field name="numbercall">-1</field>
-        <field name="doall" eval="False"/>
         <field name="model_id" ref="model_runbot_runbot"/>
         <field name="code">model._cron()</field>
         <field name="state">code</field>
diff --git a/runbot/models/ir_cron.py b/runbot/models/ir_cron.py
index 04e59eb2..0261a585 100644
--- a/runbot/models/ir_cron.py
+++ b/runbot/models/ir_cron.py
@@ -10,4 +10,4 @@ odoo.addons.base.models.ir_cron._intervalTypes['seconds'] = lambda interval: rel
 class ir_cron(models.Model):
     _inherit = "ir.cron"
 
-    interval_type = fields.Selection(selection_add=[('seconds', 'Seconds')])
+    interval_type = fields.Selection(selection_add=[('seconds', 'Seconds')], ondelete={'seconds': 'cascade'})