diff --git a/config/devices.properties b/config/devices.properties
index 6e270ae..3a91f25 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -13,4 +13,4 @@ bm2trx=ch.psi.pshell.epics.Motor|X12SA-OP-BM2:TRX1|||true
 bm2try=ch.psi.pshell.epics.Motor|X12SA-OP-BM2:TRY1|||true
 bm3trx=ch.psi.pshell.epics.Motor|X12SA-OP-BM3:TRX1|||true
 bm3try=ch.psi.pshell.epics.Motor|X12SA-OP-BM3:TRY1|||true
-sdev1=ch.psi.pshell.serial.SerialPortDevice|/dev/tty|||
+sdev1=ch.psi.pshell.serial.SerialPortDevice||||