diff --git a/webclient/room/room-controller.js b/webclient/room/room-controller.js
index e204a27e0..58ba432ce 100644
--- a/webclient/room/room-controller.js
+++ b/webclient/room/room-controller.js
@@ -152,6 +152,8 @@ angular.module('RoomController', ['ngSanitize', 'mUtilities'])
     };
 
     var updateMemberList = function(chunk) {
+        if (chunk.room_id != $scope.room_id) return;
+
         var isNewMember = !(chunk.target_user_id in $scope.members);
         if (isNewMember) {
             // FIXME: why are we copying these fields around inside chunk?