diff --git a/classes/Profile.php b/classes/Profile.php
index ab05bb8546..c79b1d893a 100644
--- a/classes/Profile.php
+++ b/classes/Profile.php
@@ -807,6 +807,8 @@ class Profile extends Memcached_DataObject
             null,
             'http://activitystrea.ms/schema/1.0/person'
         );
+        // FIXME: this presupposes a local user -- not necessarily the case
+        // instead use User::uri or Remote_profile::uri or Ostatus_profile::homeuri
         $xs->element(
             'id',
             null,