1 files changed, 3 insertions, 3 deletions
diff --git a/tests/storage/test_receipts.py b/tests/storage/test_receipts.py
index d8d84152dc..12c17f1073 100644
--- a/tests/storage/test_receipts.py
+++ b/tests/storage/test_receipts.py
@@ -37,9 +37,9 @@ class ReceiptTestCase(HomeserverTestCase):
         self.store = homeserver.get_datastores().main
 
         self.room_creator = homeserver.get_room_creation_handler()
-        self.persist_event_storage_controller = (
-            self.hs.get_storage_controllers().persistence
-        )
+        persist_event_storage_controller = self.hs.get_storage_controllers().persistence
+        assert persist_event_storage_controller is not None
+        self.persist_event_storage_controller = persist_event_storage_controller
 
         # Create a test user
         self.ourUser = UserID.from_string(OUR_USER_ID)