diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index 3980fc34aed..a331c121835 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -806,26 +806,20 @@ class Database(openerpweb.Controller):
     @openerpweb.jsonrequest
     def create(self, req, fields):
         params = dict(map(operator.itemgetter('name', 'value'), fields))
-        create_attrs = (
+        return req.session.proxy("db").create_database(
             params['super_admin_pwd'],
             params['db_name'],
             bool(params.get('demo_data')),
             params['db_lang'],
-            params['create_admin_pwd']
-        )
-
-        return req.session.proxy("db").create_database(*create_attrs)
+            params['create_admin_pwd'])
 
     @openerpweb.jsonrequest
     def duplicate(self, req, fields):
         params = dict(map(operator.itemgetter('name', 'value'), fields))
-        duplicate_attrs = (
+        return req.session.proxy("db").duplicate_database(
             params['super_admin_pwd'],
             params['db_original_name'],
-            params['db_name'],
-        )
-
-        return req.session.proxy("db").duplicate_database(*duplicate_attrs)
+            params['db_name'])
 
     @openerpweb.jsonrequest
     def drop(self, req, fields):