diff --git a/currency_rate_update/company.py b/currency_rate_update/company.py
index dd836f4cf..6696aa57b 100644
--- a/currency_rate_update/company.py
+++ b/currency_rate_update/company.py
@@ -31,7 +31,7 @@
 import netsvc
 from openerp.osv import fields, osv
 
-class res_company(osv.osv):
+class res_company(osv.Model):
     """override company to add currency update"""
     
     def _multi_curr_enable(self, cr, uid, ids, field_name, arg, context={}):
diff --git a/currency_rate_update/currency_rate_update.py b/currency_rate_update/currency_rate_update.py
index 4c95d109b..00a8d96d4 100755
--- a/currency_rate_update/currency_rate_update.py
+++ b/currency_rate_update/currency_rate_update.py
@@ -50,7 +50,7 @@ from openerp.tools.translate import _
 
 _logger = logging.getLogger(__name__)
 
-class Currency_rate_update_service(osv.osv):
+class Currency_rate_update_service(osv.Model):
     """Class thats tell for wich services wich currencies 
     have to be updated"""
     _name = "currency.rate.update.service"
@@ -110,7 +110,7 @@ class Currency_rate_update_service(osv.osv):
     ]
 
 
-class Currency_rate_update(osv.osv):
+class Currency_rate_update(osv.Model):
     """Class that handle an ir cron call who will 
     update currencies based on a web url"""
     _name = "currency.rate.update"