1 files changed, 1 insertions, 1 deletions
diff --git a/tests/federation/test_federation.py b/tests/federation/test_federation.py
index 03b2167cf7..eed50e6335 100644
--- a/tests/federation/test_federation.py
+++ b/tests/federation/test_federation.py
@@ -41,7 +41,7 @@ def make_pdu(prev_pdus=[], **kwargs):
     }
     pdu_fields.update(kwargs)
 
-    return PduTuple(PduEntry(**pdu_fields), prev_pdus, {}, {})
+    return PduTuple(PduEntry(**pdu_fields), prev_pdus, {}, {}, {})
 
 
 class FederationTestCase(unittest.TestCase):