1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/federation/transport/server/federation.py b/synapse/federation/transport/server/federation.py
index 9cc9a7339d..23ce343057 100644
--- a/synapse/federation/transport/server/federation.py
+++ b/synapse/federation/transport/server/federation.py
@@ -110,7 +110,7 @@ class FederationSendServlet(BaseFederationServerServlet):
             if issue_8631_logger.isEnabledFor(logging.DEBUG):
                 DEVICE_UPDATE_EDUS = ["m.device_list_update", "m.signing_key_update"]
                 device_list_updates = [
-                    edu.content
+                    edu.get("content", {})
                     for edu in transaction_data.get("edus", [])
                     if edu.get("edu_type") in DEVICE_UPDATE_EDUS
                 ]