diff --git a/lib/galaxy/webapps/galaxy/controllers/user.py b/lib/galaxy/webapps/galaxy/controllers/user.py
index 99db8aff2c7..d5bfc953833 100644
--- a/lib/galaxy/webapps/galaxy/controllers/user.py
+++ b/lib/galaxy/webapps/galaxy/controllers/user.py
@@ -225,7 +225,7 @@ class User(BaseUIController, UsesFormDefinitionsMixin, CreatesApiKeysMixin):
             # while sometimes, so we don't want to block on logout.
             send_local_control_task(trans.app,
                                     "recalculate_user_disk_usage",
-                                    {"user_id": trans.security.encode_id(trans.user.id)})
+                                    kwargs={"user_id": trans.security.encode_id(trans.user.id)})
         # Since logging an event requires a session, we'll log prior to ending the session
         trans.log_event("User logged out")
         trans.handle_user_logout(logout_all=logout_all)