diff --git a/qubesadmin/tests/mock_app.py b/qubesadmin/tests/mock_app.py
index 00564c96..4294ab91 100644
--- a/qubesadmin/tests/mock_app.py
+++ b/qubesadmin/tests/mock_app.py
@@ -232,6 +232,10 @@ def default_string(self):
     "last-updates-check",
     "last-update",
     "prohibit-start",
+    "preload-dispvm-max",
+    "preload-dispvm",
+    "preload-dispvm-in-progress",
+    "preload-dispvm-completed",
     "qubes-vm-update-hide-updated",
     "qubes-vm-update-restart-servicevms",
     "qubes-vm-update-restart-system",