diff --git a/currency_rate_update/currency_rate_update.py b/currency_rate_update/currency_rate_update.py
index 5279e7166..1ad031a28 100755
--- a/currency_rate_update/currency_rate_update.py
+++ b/currency_rate_update/currency_rate_update.py
@@ -44,8 +44,10 @@
 
 from osv import osv, fields
 import time
+from mx import DateTime
 from datetime import datetime, timedelta
 import netsvc
+import string
 from tools.translate import _
 
 class Currency_rate_update_service(osv.osv):