diff --git a/data/api/client-server/rooms.yaml b/data/api/client-server/rooms.yaml
index 8bbe2395..9d456d32 100644
--- a/data/api/client-server/rooms.yaml
+++ b/data/api/client-server/rooms.yaml
@@ -126,7 +126,9 @@ paths:
           content:
             application/json:
               schema:
-                type: object
+                oneOf:
+                  - type: object
+                  - $ref: "../../event-schemas/core-event-schema/state_event.yaml
               examples:
                 response:
                   value: {