diff --git a/tests/units/fakes.py b/tests/units/fakes.py
index 6473685..8e17ee6 100644
--- a/tests/units/fakes.py
+++ b/tests/units/fakes.py
@@ -75,6 +75,10 @@ def fake_get_config(section, option):
         raise ConfigurationError
 
 
+def fake_get_filter(self):
+    return {'foo1', 'foo2', 'foo3'}
+
+
 class FakeSWConnection(object):
     def __init__(self, *args, **kwargs):
         self.mainargs = args
diff --git a/tests/units/test_accounts.py b/tests/units/test_accounts.py
index c893a65..6f014ff 100644
--- a/tests/units/test_accounts.py
+++ b/tests/units/test_accounts.py
@@ -35,6 +35,8 @@ class TestAccountBase(tests.units.base.TestCase):
         self.stubs.Set(swiftclient.client, 'Connection',
                        fakes.FakeSWConnection)
         self.stubs.Set(swsync.accounts, 'get_config', fakes.fake_get_config)
+        self.stubs.Set(swsync.accounts.Accounts, 'get_target_tenant_filter',
+                       fakes.fake_get_filter)
         self.stubs.Set(swiftclient, 'http_connection',
                        fakes.FakeSWClient.http_connection)