diff --git a/models/shipcloud_pickup.py b/models/shipcloud_pickup.py
index 692acb2..5322279 100644
--- a/models/shipcloud_pickup.py
+++ b/models/shipcloud_pickup.py
@@ -20,10 +20,10 @@ class SCPickup(models.Model):
     # address from where to pick up
     address = fields.Many2one('res.partner', string='Pick-up address', required=True)
     # earliest pick-up time
-    earliest = fields.Datetime('Earliest', required=True, default=fields.Datetime.now(),
+    earliest = fields.Datetime('Earliest', required=True, default=lambda self: fields.Datetime.now(),
                                readonly=True, states={'draft': [('readonly', False)]})
     # latest pick-up time
-    latest = fields.Datetime('Latest', required=True,
+    latest = fields.Datetime('Latest', required=True, default=lambda self: fields.Datetime.now(),
                              readonly=True, states={'draft': [('readonly', False)]})
     # draft: not yet requested from shipcloud; confirmed: confirmed by shipcloud
     state = fields.Selection([('draft', 'Draft'), ('confirmed', 'Confirmed'), ('done','Done')],