diff --git a/unittests/test_concrete_property.py b/unittests/test_concrete_property.py
index b806098732c8a77a4913bbda0f8b2b8ebdc4a68c..0e5c28534c7ac404b829df575225f42e908adb01 100644
--- a/unittests/test_concrete_property.py
+++ b/unittests/test_concrete_property.py
@@ -24,17 +24,19 @@
 """Tests for the _ConcreteProperty class."""
 
 
-# pylint: disable=missing-docstring
-from nose.tools import (assert_is_not_none as there, assert_true as tru,
-                        assert_equal as eq)
-from caosdb.common.models import _ConcreteProperty
 from caosdb import configure_connection
+from caosdb.common.models import _ConcreteProperty
 from caosdb.connection.mockup import MockUpServerConnection
+# pylint: disable=missing-docstring
+from nose.tools import assert_equal as eq
+from nose.tools import assert_is_not_none as there
+from nose.tools import assert_true as tru
 
 
 def setup_module():
     there(_ConcreteProperty)
     configure_connection(url="unittests", username="testuser",
+                         password_method="plain",
                          password="testpassword", timeout=200,
                          implementation=MockUpServerConnection)