diff --git a/src/controllers/organisms/MemberList.js b/src/controllers/organisms/MemberList.js
index a511816d..1213db9b 100644
--- a/src/controllers/organisms/MemberList.js
+++ b/src/controllers/organisms/MemberList.js
@@ -62,6 +62,7 @@ module.exports = {
     },
 
     roomMembers: function(limit) {
+        if (!this.props.roomId) return {};
         var cli = MatrixClientPeg.get();
         var all_members = cli.getRoom(this.props.roomId).currentState.members;
         var all_user_ids = Object.keys(all_members);