diff --git a/psa-car-controller.service b/psa-car-controller.service
index 42b0768..501b53e 100644
--- a/psa-car-controller.service
+++ b/psa-car-controller.service
@@ -5,10 +5,11 @@ After=network-online.target
 
 [Service]
 ExecStart=/usr/bin/psa-car-controller -c -r -d
+WorkingDirectory=<specify data dir for log and config>
 Restart=on-failure
 RestartSec=1m
 Environment=PYTHONUNBUFFERED=true
 User=psa
 
 [Install]
-WantedBy=multi-user.target
\ No newline at end of file
+WantedBy=multi-user.target