1 files changed, 1 insertions, 0 deletions
diff --git a/tests/storage/test_event_chain.py b/tests/storage/test_event_chain.py
index 27d5b0125f..81feb3ec29 100644
--- a/tests/storage/test_event_chain.py
+++ b/tests/storage/test_event_chain.py
@@ -431,6 +431,7 @@ class EventChainStoreTestCase(HomeserverTestCase):
 
         for e in events:
             e.internal_metadata.stream_ordering = self._next_stream_ordering
+            e.internal_metadata.instance_name = self.hs.get_instance_name()
             self._next_stream_ordering += 1
 
         def _persist(txn: LoggingTransaction) -> None: