diff --git a/testlib/dbus.py b/testlib/dbus.py
index d05906b..6f49d42 100644
--- a/testlib/dbus.py
+++ b/testlib/dbus.py
@@ -260,7 +260,7 @@ def pool_start(id_string, id_type):
         )
 
         return manager_iface.StartPool(
-            id_string, id_type, (False, (False, 0)), (False, 0)
+            id_string, id_type, (False, (False, 0)), (False, 0), False
         )
 
     @staticmethod