1 files changed, 3 insertions, 1 deletions
diff --git a/synapse/app/federation_reader.py b/synapse/app/federation_reader.py
index 76a97f8f32..5255d9e8cc 100644
--- a/synapse/app/federation_reader.py
+++ b/synapse/app/federation_reader.py
@@ -175,7 +175,9 @@ def start(config_options):
     )
 
     ss.setup()
-    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
+    reactor.addSystemEventTrigger(
+        "before", "startup", _base.start, ss, config.worker_listeners
+    )
 
     _base.start_worker_reactor("synapse-federation-reader", config)