diff --git a/CHANGELOG b/CHANGELOG
index 0c22f94035..033d68e559 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,2 +1,4 @@
+* Manage default values of trytond configuration
+
 Version 1.8.0 - 2010-12-24
 * Initial release
diff --git a/README b/README
index b4a4955407..7e0a9576d7 100644
--- a/README
+++ b/README
@@ -21,6 +21,8 @@ Configuration to connect to a sqlite memory database using trytond as module.
     >>> config = config.set_trytond(':memory:', database_type='sqlite')
 
 When connecting to a database that doesn't exist, Proteus will create it.
+If no database name was given, then Proteus will generate one. It will choose
+':memory': for 'sqlite' type otherwise `'test_%' % int(time.time())`.
 
 Installing a module
 ~~~~~~~~~~~~~~~~~~~
diff --git a/proteus/config.py b/proteus/config.py
index 6a7b2a620b..710b01b296 100644
--- a/proteus/config.py
+++ b/proteus/config.py
@@ -10,6 +10,7 @@ import threading
 from decimal import Decimal
 from types import NoneType
 import datetime
+import time
 
 def dump_decimal(self, value, write):
     write("<value><double>")
@@ -93,21 +94,27 @@ class TrytondProxy(object):
 class TrytondConfig(Config):
     'Configuration for trytond'
 
-    def __init__(self, database_name, user, database_type, language='en_US',
-            password=''):
+    def __init__(self, database_name=None, user='admin', database_type=None,
+            language='en_US', password=''):
         super(TrytondConfig, self).__init__()
         from trytond.config import CONFIG
-        CONFIG['db_type'] = database_type
         CONFIG.parse()
+        if database_type is not None:
+            CONFIG['db_type'] = database_type
         from trytond.modules import register_classes
         from trytond.pool import Pool
         from trytond.backend import Database
         from trytond.protocols.dispatcher import create
         from trytond.cache import Cache
         from trytond.transaction import Transaction
+        self.database_type = CONFIG['db_type']
+        if database_name is None:
+            if self.database_type == 'sqlite':
+                database_name = ':memory:'
+            else:
+                database_name = 'test_%s' % int(time.time())
         self.database_name = database_name
         self._user = user
-        self.database_type = database_type
 
         register_classes()
 
@@ -151,7 +158,7 @@ class TrytondConfig(Config):
         proxy = self.get_proxy(name, type=type)
         return [x for x in proxy._object._rpc]
 
-def set_trytond(database_name, user='admin', database_type='postgresql',
+def set_trytond(database_name=None, user='admin', database_type=None,
         language='en_US', password=''):
     'Set trytond package as backend'
     _CONFIG.current = TrytondConfig(database_name, user, database_type,
diff --git a/proteus/tests/test_config.py b/proteus/tests/test_config.py
index 719052406a..8c568b49dd 100644
--- a/proteus/tests/test_config.py
+++ b/proteus/tests/test_config.py
@@ -7,7 +7,7 @@ import proteus.config
 class TestConfig(TestCase):
 
     def setUp(self):
-        proteus.config.set_trytond(':memory:', database_type='sqlite')
+        proteus.config.set_trytond(database_type='sqlite')
 
     def test_proxy(self):
         config = proteus.config.get_config()
@@ -22,7 +22,7 @@ class TestConfig(TestCase):
 
     def test_trytond_config_eq(self):
         config1 = proteus.config.get_config()
-        proteus.config.set_trytond(':memory:', database_type='sqlite')
+        proteus.config.set_trytond(database_type='sqlite')
         config2 = proteus.config.get_config()
         self.assertEqual(config1, config2)
 
diff --git a/proteus/tests/test_model.py b/proteus/tests/test_model.py
index 8d1d760a80..92841eb5c9 100644
--- a/proteus/tests/test_model.py
+++ b/proteus/tests/test_model.py
@@ -7,7 +7,7 @@ from proteus import config, Model
 class TestModel(TestCase):
 
     def setUp(self):
-        config.set_trytond(':memory:', database_type='sqlite')
+        config.set_trytond(database_type='sqlite')
 
     def test_class_cache(self):
         User1 = Model.get('res.user')
diff --git a/proteus/tests/test_wizard.py b/proteus/tests/test_wizard.py
index 4541b8ae4f..2b824c3e1e 100644
--- a/proteus/tests/test_wizard.py
+++ b/proteus/tests/test_wizard.py
@@ -7,7 +7,7 @@ from proteus import config, Wizard, Model
 class TestWizard(TestCase):
 
     def setUp(self):
-        config.set_trytond(':memory:', database_type='sqlite')
+        config.set_trytond(database_type='sqlite')
 
     def test_translation_clean(self):
         translation_clean = Wizard('ir.translation.clean')