1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py
index 274d582d07..236d98a29d 100644
--- a/synapse/app/generic_worker.py
+++ b/synapse/app/generic_worker.py
@@ -439,6 +439,7 @@ class GenericWorkerPresence(BasePresenceHandler):
             PresenceState.ONLINE,
             PresenceState.UNAVAILABLE,
             PresenceState.OFFLINE,
+            PresenceState.BUSY,
         )
         if presence not in valid_presence:
             raise SynapseError(400, "Invalid presence state")