diff --git a/addons/project_scrum/project_scrum.py b/addons/project_scrum/project_scrum.py
index 7d1d071a7c3..af673195d0d 100644
--- a/addons/project_scrum/project_scrum.py
+++ b/addons/project_scrum/project_scrum.py
@@ -290,7 +290,7 @@ class project_scrum_meeting(osv.osv):
     # TODO: Find the right sprint thanks to users and date
     #
     _defaults = {
-        'date' : time.strftime('%Y-%m-%d'),
+        'date' : lambda *a: time.strftime('%Y-%m-%d'),
     }
 
     def button_send_to_master(self, cr, uid, ids, context=None):
diff --git a/addons/purchase_requisition/purchase_requisition.py b/addons/purchase_requisition/purchase_requisition.py
index c412f195ef4..09792e8b2d3 100644
--- a/addons/purchase_requisition/purchase_requisition.py
+++ b/addons/purchase_requisition/purchase_requisition.py
@@ -44,7 +44,7 @@ class purchase_requisition(osv.osv):
         'state': fields.selection([('draft','Draft'),('in_progress','In Progress'),('cancel','Cancelled'),('done','Done')], 'State', required=True)
     }
     _defaults = {
-        'date_start': time.strftime('%Y-%m-%d %H:%M:%S'),
+        'date_start': lambda *a: time.strftime('%Y-%m-%d %H:%M:%S'),
         'state': 'draft',
         'exclusive': 'multiple',
         'company_id': lambda self, cr, uid, c: self.pool.get('res.company')._company_default_get(cr, uid, 'purchase.requisition', context=c),