diff --git a/api/client-server/v1/sync.yaml b/api/client-server/v1/sync.yaml
index c7f78187..d82ee9e4 100644
--- a/api/client-server/v1/sync.yaml
+++ b/api/client-server/v1/sync.yaml
@@ -271,7 +271,7 @@ paths:
                         type: object
                         description: "The invite event if `membership` is `invite`"
                         allOf:
-                          - "$ref": "room.room.member"
+                          - "$ref": "m.room.member"
                     messages:
                       type: object
                       title: PaginationChunk