diff --git a/config/devices.properties b/config/devices.properties
index 49ea190..0094013 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -1,7 +1,7 @@
 img=ch.psi.pshell.prosilica.Prosilica|25001 ''|||true
 microscan=ch.psi.pshell.serial.TcpDevice|129.129.126.200:2001|||
 microscan_cmd=ch.psi.pshell.serial.TcpDevice|129.129.126.200:2003|||
-ue=ch.psi.pshell.serial.SerialPortDevice|COM4|||
+ue=ch.psi.pshell.serial.SerialPortDevice||||
 #robot=RobotTcp|127.0.0.1:1000|||
 #onewire=ch.psi.pshell.serial.TcpDevice|129.129.126.83:5000|||
 puck_detection=ch.psi.mxsc.PuckDetection|raspberrypi:5556|||