diff --git a/api/client-server/event_context.yaml b/api/client-server/event_context.yaml
index 642643cd..1a99fd10 100644
--- a/api/client-server/event_context.yaml
+++ b/api/client-server/event_context.yaml
@@ -150,3 +150,5 @@ paths:
         403:
           description: >
             You aren't a member of the room.
+      tags:
+        - Room participation