diff --git a/tests/db/test_init.py b/tests/db/test_init.py
index f0dc5925ec370c5b3f6ea8d8b09995aacec303ca..8b2e840fa46a75ae46f2972d7700d2b2457720d0 100644
--- a/tests/db/test_init.py
+++ b/tests/db/test_init.py
@@ -23,7 +23,7 @@ class TestConfigureSessionFactory(TestCase):
         self.Session = sessionmaker()
 
     def test_session_is_not_bound_if_no_engine_is_defined_by_config(self):
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         session = self.Session()
         self.assertTrue(session.bind is None)
         session.close()
@@ -33,7 +33,7 @@ class TestConfigureSessionFactory(TestCase):
         session = self.Session()
         self.assertTrue(session.bind is None)
         session.close()
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         session = self.Session()
         self.assertTrue(isinstance(session.bind, Engine))
         self.assertEqual(unicode(session.bind.url), u'sqlite:////a/very/custom/db')
@@ -55,14 +55,14 @@ class TestConfigureSessionFactory(TestCase):
     @patch(u'rattail.db.changes.record_changes')
     def test_changes_will_not_be_recorded_by_default(self, record_changes):
         self.config.set(u'rattail.db', u'sqlalchemy.url', u'sqlite://')
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         self.assertFalse(record_changes.called)
 
     @patch('rattail.db.util.record_changes')
     def test_changes_will_be_recorded_by_so_configured(self, record_changes):
         self.config.set(u'rattail.db', u'sqlalchemy.url', u'sqlite://')
         self.config.set(u'rattail.db', u'changes.record', u'true')
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         # Role changes are ignored by default.
         record_changes.assert_called_once_with(self.Session, True)
 
@@ -70,7 +70,7 @@ class TestConfigureSessionFactory(TestCase):
     def test_changes_will_still_be_recorded_with_deprecated_config(self, record_changes):
         self.config.set(u'rattail.db', u'sqlalchemy.url', u'sqlite://')
         self.config.set(u'rattail.db', u'changes.record', u'true')
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         # Role changes are ignored by default.
         record_changes.assert_called_once_with(self.Session, True)
 
@@ -79,6 +79,6 @@ class TestConfigureSessionFactory(TestCase):
         self.config.set(u'rattail.db', u'sqlalchemy.url', u'sqlite://')
         self.config.set(u'rattail.db', u'changes.record', u'true')
         self.config.set(u'rattail.db', u'changes.ignore_roles', u'false')
-        configure_session_factory(self.config, self.Session)
+        configure_session_factory(self.config, session_factory=self.Session)
         # Role changes are ignored by default; False means config works.
         record_changes.assert_called_once_with(self.Session, False)