1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/api/constants.py b/synapse/api/constants.py

index b668da4a26..4fc8b79a40 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -68,6 +68,7 @@ class EventTypes(object):
     PowerLevels = "m.room.power_levels"
     Aliases = "m.room.aliases"
     Redaction = "m.room.redaction"
+    Feedback = "m.room.message.feedback"
 
     # These are used for validation
     Message = "m.room.message"