diff --git a/printer.cfg b/printer.cfg
index c446315..1f1c867 100644
--- a/printer.cfg
+++ b/printer.cfg
@@ -15,7 +15,7 @@
 
 [mcu]
 # NOTE Obtain definition by "ls -l /dev/serial/by-id/"
-serial: /dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0
+serial: /dev/serial/by-path/platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.2:1.0-port0
 restart_method: command
 
 [printer]