diff --git a/src/user/room.ts b/src/user/room.ts
index b3743f1aa1db2bd3c7ecae409ef0829dff290389..604255c496800e3150383efcbccb2bc7368f114a 100644
--- a/src/user/room.ts
+++ b/src/user/room.ts
@@ -848,6 +848,7 @@ export class Room extends Accessory implements Sayable {
             .length > 0
   }
 
+  public async memberAll ()                              : Promise<Contact[]>
   public async memberAll (name: string)                  : Promise<Contact[]>
   public async memberAll (filter: RoomMemberQueryFilter) : Promise<Contact[]>