diff --git a/lib/activityobject.php b/lib/activityobject.php
index 8772611b49..c506b17e85 100644
--- a/lib/activityobject.php
+++ b/lib/activityobject.php
@@ -32,8 +32,6 @@ if (!defined('STATUSNET')) {
     exit(1);
 }
 
-require(INSTALLDIR.'/lib/activitystreamjsondocument.php');
-
 /**
  * A noun-ish thing in the activity universe
  *