diff --git a/config/devices.properties b/config/devices.properties
index 41f0bd5..5201cb8 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -24,4 +24,4 @@ led_ctrl1=ch.psi.pshell.modbus.ProcessVariable|dewar 0|||
 led_ctrl2=ch.psi.pshell.modbus.ProcessVariable|dewar 1|||
 #cam=ch.psi.pshell.epics.AreaDetector|MX-SAMCAM|||
 #img_back=ch.psi.pshell.imaging.CameraSource|cam||-100|
-microscan=ch.psi.pshell.serial.TcpDevice|129.129.126.200 2001|||
+microscan=ch.psi.pshell.serial.TcpDevice|129.129.126.200:2001|||