diff --git a/src/_zkapauthorizer/tests/test_lease_maintenance.py b/src/_zkapauthorizer/tests/test_lease_maintenance.py
index 7c023a16eeef18aecdf99a5a3e55ae15e4248222..5edf640aee95e8177b9a0614ede5a4a9e1daf391 100644
--- a/src/_zkapauthorizer/tests/test_lease_maintenance.py
+++ b/src/_zkapauthorizer/tests/test_lease_maintenance.py
@@ -278,7 +278,7 @@ class LeaseMaintenanceServiceTests(TestCase):
         service = lease_maintenance_service(
             dummy_maintain_leases,
             clock,
-            last_run,
+            last_run_path,
             random,
             mean,
             range_,