diff --git a/modules/fediverse/ap_server.py b/modules/fediverse/ap_server.py
index 416ab32a..2db09b12 100644
--- a/modules/fediverse/ap_server.py
+++ b/modules/fediverse/ap_server.py
@@ -77,7 +77,7 @@ class Server(object):
             if (requested_username == self.username and
                     requested_instance == self.instance):
 
-                self_id = self._ap_self_url(event["url_for"], self.username)
+                self_id = self._ap_self_url(event["url_for"])
 
                 event["response"].content_type = ap_utils.JRD_TYPE
                 event["response"].write_json({