diff --git a/tests/scenario_invoice.rst b/tests/scenario_invoice.rst
index b5fbd457e5..67a78564fa 100644
--- a/tests/scenario_invoice.rst
+++ b/tests/scenario_invoice.rst
@@ -7,7 +7,8 @@ Imports::
     >>> from dateutil.relativedelta import relativedelta
     >>> from decimal import Decimal
     >>> from operator import attrgetter
-    >>> from proteus import config, Model, Wizard
+    >>> from proteus import Model, Wizard
+    >>> from trytond.tests.tools import install_modules
     >>> from trytond.modules.company.tests.tools import create_company, \
     ...     get_company
     >>> from trytond.modules.account.tests.tools import create_fiscalyear, \
@@ -16,18 +17,9 @@ Imports::
     ...     set_fiscalyear_invoice_sequences
     >>> today = datetime.date.today()
 
-Create database::
-
-    >>> config = config.set_trytond()
-    >>> config.pool.test = True
-
 Install account_invoice::
 
-    >>> Module = Model.get('ir.module')
-    >>> account_invoice_module, = Module.find(
-    ...     [('name', '=', 'account_invoice')])
-    >>> account_invoice_module.click('install')
-    >>> Wizard('ir.module.install_upgrade').execute('upgrade')
+    >>> config = install_modules('account_invoice')
 
 Create company::
 
diff --git a/tests/scenario_invoice_alternate_currency.rst b/tests/scenario_invoice_alternate_currency.rst
index b0b7e6c4bf..b975d331d1 100644
--- a/tests/scenario_invoice_alternate_currency.rst
+++ b/tests/scenario_invoice_alternate_currency.rst
@@ -8,7 +8,8 @@ Imports::
     >>> from dateutil.relativedelta import relativedelta
     >>> from decimal import Decimal
     >>> from operator import attrgetter
-    >>> from proteus import config, Model, Wizard
+    >>> from proteus import Model, Wizard
+    >>> from trytond.tests.tools import install_modules
     >>> from trytond.modules.currency.tests.tools import get_currency
     >>> from trytond.modules.company.tests.tools import create_company, \
     ...     get_company
@@ -18,18 +19,9 @@ Imports::
     ...     set_fiscalyear_invoice_sequences
     >>> today = datetime.date.today()
 
-Create database::
-
-    >>> config = config.set_trytond()
-    >>> config.pool.test = True
-
 Install account_invoice::
 
-    >>> Module = Model.get('ir.module')
-    >>> account_invoice_module, = Module.find(
-    ...     [('name', '=', 'account_invoice')])
-    >>> account_invoice_module.click('install')
-    >>> Wizard('ir.module.install_upgrade').execute('upgrade')
+    >>> config = install_modules('account_invoice')
 
 Create company::
 
diff --git a/tests/scenario_invoice_supplier.rst b/tests/scenario_invoice_supplier.rst
index ff0d962165..0e5c1f4085 100644
--- a/tests/scenario_invoice_supplier.rst
+++ b/tests/scenario_invoice_supplier.rst
@@ -7,7 +7,8 @@ Imports::
     >>> from dateutil.relativedelta import relativedelta
     >>> from decimal import Decimal
     >>> from operator import attrgetter
-    >>> from proteus import config, Model, Wizard
+    >>> from proteus import Model, Wizard
+    >>> from trytond.tests.tools import install_modules
     >>> from trytond.modules.company.tests.tools import create_company, \
     ...     get_company
     >>> from trytond.modules.account.tests.tools import create_fiscalyear, \
@@ -16,18 +17,9 @@ Imports::
     ...     set_fiscalyear_invoice_sequences
     >>> today = datetime.date.today()
 
-Create database::
-
-    >>> config = config.set_trytond()
-    >>> config.pool.test = True
-
 Install account_invoice::
 
-    >>> Module = Model.get('ir.module')
-    >>> account_invoice_module, = Module.find(
-    ...     [('name', '=', 'account_invoice')])
-    >>> account_invoice_module.click('install')
-    >>> Wizard('ir.module.install_upgrade').execute('upgrade')
+    >>> config = install_modules('account_invoice')
 
 Create company::
 
diff --git a/tests/test_account_invoice.py b/tests/test_account_invoice.py
index d90a1d19b0..9621c22a09 100644
--- a/tests/test_account_invoice.py
+++ b/tests/test_account_invoice.py
@@ -6,7 +6,7 @@ import datetime
 from decimal import Decimal
 import trytond.tests.test_tryton
 from trytond.tests.test_tryton import ModuleTestCase, with_transaction
-from trytond.tests.test_tryton import doctest_setup, doctest_teardown
+from trytond.tests.test_tryton import doctest_teardown
 from trytond.tests.test_tryton import doctest_checker
 from trytond.pool import Pool
 
@@ -208,16 +208,16 @@ def suite():
     suite.addTests(unittest.TestLoader().loadTestsFromTestCase(
         AccountInvoiceTestCase))
     suite.addTests(doctest.DocFileSuite('scenario_invoice.rst',
-            setUp=doctest_setup, tearDown=doctest_teardown, encoding='utf-8',
+            tearDown=doctest_teardown, encoding='utf-8',
             checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     suite.addTests(doctest.DocFileSuite('scenario_invoice_supplier.rst',
-            setUp=doctest_setup, tearDown=doctest_teardown, encoding='utf-8',
+            tearDown=doctest_teardown, encoding='utf-8',
             checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     suite.addTests(doctest.DocFileSuite(
             'scenario_invoice_alternate_currency.rst',
-            setUp=doctest_setup, tearDown=doctest_teardown, encoding='utf-8',
+            tearDown=doctest_teardown, encoding='utf-8',
             checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     return suite