diff --git a/addons/payment_ogone/models/ogone.py b/addons/payment_ogone/models/ogone.py
index a9a4f633887..2ae9722b655 100644
--- a/addons/payment_ogone/models/ogone.py
+++ b/addons/payment_ogone/models/ogone.py
@@ -30,10 +30,10 @@ class PaymentAcquirerOgone(osv.Model):
         @TDETODO: complete me
         """
         return {
-            'ogone_standard_order_url': 'https://secure.ogone.com/ncol/%s/orderstandard_utf8.asp' % env,
-            'ogone_direct_order_url': 'https://secure.ogone.com/ncol/%s/orderdirect.asp' % env,
-            'ogone_direct_query_url': 'https://secure.ogone.com/ncol/%s/querydirect.asp' % env,
-            'ogone_afu_agree_url': 'https://secure.ogone.com/ncol/%s/AFU_agree.asp' % env,
+            'ogone_standard_order_url': 'https://secure.ogone.com/ncol/%s/orderstandard_utf8.asp' % (env,),
+            'ogone_direct_order_url': 'https://secure.ogone.com/ncol/%s/orderdirect_utf8.asp' % (env,),
+            'ogone_direct_query_url': 'https://secure.ogone.com/ncol/%s/querydirect_utf8.asp' % (env,),
+            'ogone_afu_agree_url': 'https://secure.ogone.com/ncol/%s/AFU_agree.asp' % (env,),
         }
 
     _columns = {