1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/app/federation_reader.py b/synapse/app/federation_reader.py
index 1f5ae1937e..b5f59a9931 100644
--- a/synapse/app/federation_reader.py
+++ b/synapse/app/federation_reader.py
@@ -39,6 +39,8 @@ from synapse.api.urls import FEDERATION_PREFIX
 from synapse.federation.transport.server import TransportLayerServer
 from synapse.crypto import context_factory
 
+from synapse import events
+
 
 from twisted.internet import reactor, defer
 from twisted.web.resource import Resource
@@ -156,6 +158,8 @@ def start(config_options):
 
     setup_logging(config.worker_log_config, config.worker_log_file)
 
+    events.USE_FROZEN_DICTS = config.use_frozen_dicts
+
     database_engine = create_engine(config.database_config)
 
     tls_server_context_factory = context_factory.ServerContextFactory(config)