diff --git a/addons/account/wizard/account_invoice_refund.py b/addons/account/wizard/account_invoice_refund.py
index 1634d66c923..506155e1ff1 100644
--- a/addons/account/wizard/account_invoice_refund.py
+++ b/addons/account/wizard/account_invoice_refund.py
@@ -21,6 +21,7 @@
 from osv import fields, osv
 from tools.translate import _
 import netsvc
+import time
 
 class account_invoice_refund(osv.osv_memory):
 
@@ -35,7 +36,7 @@ class account_invoice_refund(osv.osv_memory):
     }
     
     _defaults = {
-        'date': lambda *a: time.strftime('%Y-%m-%d'),
+        'date': time.strftime('%Y-%m-%d'),
     }
 
     def compute_refund(self, cr, uid, ids, mode, context=None):
diff --git a/addons/account/wizard/account_reconcile.py b/addons/account/wizard/account_reconcile.py
index 1f745419c5a..be0ebc40677 100644
--- a/addons/account/wizard/account_reconcile.py
+++ b/addons/account/wizard/account_reconcile.py
@@ -19,7 +19,6 @@
 #
 ##############################################################################
 import time
-import datetime
 
 from osv import fields, osv
 from tools.translate import _
diff --git a/addons/mrp_operations/mrp_operations.py b/addons/mrp_operations/mrp_operations.py
index 46e1dec1e12..e8a97a47d9d 100644
--- a/addons/mrp_operations/mrp_operations.py
+++ b/addons/mrp_operations/mrp_operations.py
@@ -185,7 +185,7 @@ class mrp_production(osv.osv):
     def action_production_end(self, cr, uid, ids):
         obj=self.browse(cr,uid,ids)[0]
         for workcenter_line in obj.workcenter_lines:
-            tmp=self.pool.get('mrp.production.workcenter.line').action_done(cr,uid,[workcenter_line.id])
+            tmp = self.pool.get('mrp.production.workcenter.line').action_done(cr,uid,[workcenter_line.id])
         return super(mrp_production,self).action_production_end(cr,uid,ids)
     
     def action_in_production(self, cr, uid, ids):