diff --git a/nvflare/private/fed/app/client/worker_process.py b/nvflare/private/fed/app/client/worker_process.py
index b0681d20af..7e16a372bc 100644
--- a/nvflare/private/fed/app/client/worker_process.py
+++ b/nvflare/private/fed/app/client/worker_process.py
@@ -14,11 +14,10 @@
 
 """Provides a command line interface for a federated client trainer"""
 
-import traceback
-
 import argparse
 import os
 import sys
+import traceback
 
 from nvflare.apis.fl_constant import FLContextKey
 from nvflare.apis.workspace import Workspace
@@ -57,7 +56,6 @@ def main():
         args.client_config = os.path.join(config_folder, "config_fed_client.json")
     args.config_folder = config_folder
     args.env = os.path.join("config", "environment.json")
-    args.log_config = None
 
     try:
         remove_restart_file(args)
@@ -90,12 +88,19 @@ def main():
                 )
             )
 
-        workspace = os.path.join("/tmp/fl", client_name)  # TODO: find a way to replace "/tmp/fl"
+        workspace = os.path.join("/tmp/fl", client_name)
+        app_root = os.path.join(args.workspace, "run_" + str(run_number), "app_" + client_name)
+
+        app_log_config = os.path.join(app_root, config_folder, "log.config")
+        if os.path.exists(app_log_config):
+            args.log_config = app_log_config
+        else:
+            args.log_config = os.path.join(workspace, "log.config")
 
         conf = FLClientStarterConfiger(
             app_root=workspace,
             client_config_file_name=args.fed_client,
-            log_config_file_name=os.path.join(workspace, "log.config"),
+            log_config_file_name=args.log_config,
             kv_list=args.set,
         )
         conf.configure()
@@ -110,8 +115,6 @@ def main():
         federated_client.fl_ctx.set_prop(EngineConstant.FL_TOKEN, token, private=False)
         federated_client.fl_ctx.set_prop(FLContextKey.WORKSPACE_ROOT, args.workspace, private=True)
 
-        app_root = os.path.join(args.workspace, "run_" + str(run_number), "app_" + client_name)
-
         client_config_file_name = os.path.join(app_root, args.client_config)
         conf = ClientJsonConfigurator(
             config_file_name=client_config_file_name,