diff --git a/nvflare/private/fed/app/client/worker_process.py b/nvflare/private/fed/app/client/worker_process.py
index 51c114bc18..0e018f042f 100644
--- a/nvflare/private/fed/app/client/worker_process.py
+++ b/nvflare/private/fed/app/client/worker_process.py
@@ -24,7 +24,6 @@
 from nvflare.apis.overseer_spec import SP
 from nvflare.apis.workspace import Workspace
 from nvflare.fuel.f3.mpm import MainProcessMonitor as mpm
-from nvflare.fuel.sec.audit import AuditService
 from nvflare.fuel.utils.argument_utils import parse_vars
 from nvflare.fuel.utils.config_service import ConfigService
 from nvflare.private.defs import EngineConstant