diff --git a/README.md b/README.md
index f2ad4fe..2b704ff 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Description=tg_print_bot
 After=network-online.target
 
 [Service]
-User=nobody
+User=nobody #must be run as user with printer permissions.
 ExecStart=/absolute/path/to/venv/bin/python /absolute/path/to/start.py
 Restart=always
 RestartSec=5s