diff --git a/tests/federation/test_federation.py b/tests/federation/test_federation.py
index a3bcb5ede8..ec39c7ee33 100644
--- a/tests/federation/test_federation.py
+++ b/tests/federation/test_federation.py
@@ -20,7 +20,7 @@ from twisted.trial import unittest
 from mock import Mock
 import logging
 
-from ..utils import MockHttpServer
+from ..utils import MockHttpServer, MockClock
 
 from synapse.server import HomeServer
 from synapse.federation import initialize_http_replication
@@ -48,16 +48,6 @@ def make_pdu(prev_pdus=[], **kwargs):
     return PduTuple(PduEntry(**pdu_fields), prev_pdus)
 
 
-class MockClock(object):
-    now = 1000
-
-    def time(self):
-        return self.now
-
-    def time_msec(self):
-        return self.time() * 1000
-
-
 class FederationTestCase(unittest.TestCase):
     def setUp(self):
         self.mock_http_server = MockHttpServer()
diff --git a/tests/utils.py b/tests/utils.py
index 578866b4f4..e397712d82 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -95,6 +95,16 @@ class MockHttpServer(HttpServer):
         self.callbacks.append((method, path_pattern, callback))
 
 
+class MockClock(object):
+    now = 1000
+
+    def time(self):
+        return self.now
+
+    def time_msec(self):
+        return self.time() * 1000
+
+
 class MemoryDataStore(object):
 
     class RoomMember(namedtuple(