diff --git a/currency_rate_update/model/company.py b/currency_rate_update/model/company.py
index e012be7bb..6a9533aec 100644
--- a/currency_rate_update/model/company.py
+++ b/currency_rate_update/model/company.py
@@ -58,4 +58,4 @@ class res_company(models.Model):
     services_to_use = fields.One2many(
         'currency.rate.update.service',
         'company_id',
-        'Currency update services')
+        string='Currency update services')
diff --git a/currency_rate_update/model/currency_rate_update.py b/currency_rate_update/model/currency_rate_update.py
index a616e5170..03fdffb1c 100644
--- a/currency_rate_update/model/currency_rate_update.py
+++ b/currency_rate_update/model/currency_rate_update.py
@@ -25,7 +25,7 @@ from datetime import datetime, time
 from dateutil.relativedelta import relativedelta
 
 from openerp import models, fields, api, _
-from openerp.exceptions import Warning
+from openerp import exceptions
 
 from ..services.currency_getter import Currency_getter_factory
 
@@ -114,13 +114,13 @@ class Currency_rate_update_service(models.Model):
     @api.constrains('max_delta_days')
     def _check_max_delta_days(self):
         if self.max_delta_days < 0:
-            raise Warning(_('Max delta days must be >= 0'))
+            raise exceptions.Warning(_('Max delta days must be >= 0'))
 
     @api.one
     @api.constrains('interval_number')
     def _check_interval_number(self):
         if self.interval_number < 0:
-            raise Warning(_('Interval number must be >= 0'))
+            raise exceptions.Warning(_('Interval number must be >= 0'))
 
     @api.onchange('interval_number')
     def _onchange_interval_number(self):
@@ -236,9 +236,9 @@ class Currency_rate_update_service(models.Model):
             if main_currencies:
                 main_curr = main_currencies[0]
             else:
-                raise Warning(_('There is no base currency set!'))
+                raise exceptions.Warning(_('There is no base currency set!'))
             if main_curr.rate != 1:
-                raise Warning(_('Base currency rate should be 1.00!'))
+                raise exceptions.Warning(_('Base currency rate should be 1.00!'))
             note = self.note or ''
             try:
                 # We initalize the class that will handle the request
diff --git a/currency_rate_update/services/currency_getter.py b/currency_rate_update/services/currency_getter.py
index e2d24435c..833d89d60 100644
--- a/currency_rate_update/services/currency_getter.py
+++ b/currency_rate_update/services/currency_getter.py
@@ -73,7 +73,7 @@ class Currency_getter_factory():
             'RO_BNR_getter',
         ]
         if class_name in allowed:
-            exec "from update_service_%s import %s" % \
+            exec "from .update_service_%s import %s" % \
                  (class_name.replace('_getter', ''), class_name)
             class_def = eval(class_name)
             return class_def()
diff --git a/currency_rate_update/services/update_service_CA_BOC.py b/currency_rate_update/services/update_service_CA_BOC.py
index 80f53c819..7d7071a4e 100644
--- a/currency_rate_update/services/update_service_CA_BOC.py
+++ b/currency_rate_update/services/update_service_CA_BOC.py
@@ -20,7 +20,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 from openerp import _
 from openerp.exceptions import except_orm
diff --git a/currency_rate_update/services/update_service_CH_ADMIN.py b/currency_rate_update/services/update_service_CH_ADMIN.py
index 110ad5c5a..1dd1d025a 100644
--- a/currency_rate_update/services/update_service_CH_ADMIN.py
+++ b/currency_rate_update/services/update_service_CH_ADMIN.py
@@ -20,7 +20,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 import logging
 _logger = logging.getLogger(__name__)
diff --git a/currency_rate_update/services/update_service_ECB.py b/currency_rate_update/services/update_service_ECB.py
index ceddce108..d5e815030 100644
--- a/currency_rate_update/services/update_service_ECB.py
+++ b/currency_rate_update/services/update_service_ECB.py
@@ -20,7 +20,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 from datetime import datetime
 from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
diff --git a/currency_rate_update/services/update_service_MX_BdM.py b/currency_rate_update/services/update_service_MX_BdM.py
index 8e3680a18..f923bce38 100644
--- a/currency_rate_update/services/update_service_MX_BdM.py
+++ b/currency_rate_update/services/update_service_MX_BdM.py
@@ -21,7 +21,7 @@
 #
 ##############################################################################
 
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 import logging
 _logger = logging.getLogger(__name__)
diff --git a/currency_rate_update/services/update_service_PL_NBP.py b/currency_rate_update/services/update_service_PL_NBP.py
index 0f57cc265..e354540b4 100644
--- a/currency_rate_update/services/update_service_PL_NBP.py
+++ b/currency_rate_update/services/update_service_PL_NBP.py
@@ -20,7 +20,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 from datetime import datetime
 from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
diff --git a/currency_rate_update/services/update_service_RO_BNR.py b/currency_rate_update/services/update_service_RO_BNR.py
index 2427c4426..c27d2b971 100644
--- a/currency_rate_update/services/update_service_RO_BNR.py
+++ b/currency_rate_update/services/update_service_RO_BNR.py
@@ -20,7 +20,7 @@
 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 ##############################################################################
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 from datetime import datetime, timedelta
 
diff --git a/currency_rate_update/services/update_service_YAHOO.py b/currency_rate_update/services/update_service_YAHOO.py
index 7ed18a954..e0b8bdd51 100644
--- a/currency_rate_update/services/update_service_YAHOO.py
+++ b/currency_rate_update/services/update_service_YAHOO.py
@@ -21,7 +21,7 @@
 #
 ##############################################################################
 
-from currency_getter_interface import Currency_getter_interface
+from .currency_getter_interface import Currency_getter_interface
 
 
 class YAHOO_getter(Currency_getter_interface):