diff --git a/config/devices.properties b/config/devices.properties
index c6389dc..689361d 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -29,7 +29,7 @@ detector_y=ch.psi.pshell.epics.Motor|X06DA-ES-DET:TRY1|||true
 cryo_jet_tans=ch.psi.pshell.epics.Motor|X06DA-ES-CJ:TRX1|||true
 aperture_x=ch.psi.pshell.epics.Motor|X06DA-ES-KBOX:TRX1|||true
 collimator_x=ch.psi.pshell.epics.Motor|X06DA-ES-KBOX:TRX2|||true
-diode_z=ch.psi.pshell.epics.Motor|X06DA-ES-KBOX:TRX3|||true
+diode_z=ch.psi.pshell.epics.Motor|X06DA-ES-KBOX:TRZ3|||true
 #beamstop=ch.psi.pshell.device.MotorGroupDiscretePositioner|beamstop_x beamstop_y beamstop_z|||
 slithop=ch.psi.pshell.epics.Slit|X06DA-OP-SH1:TRX2 X06DA-OP-SH1:TRX1|||true
 slit1h_size=ch.psi.pshell.epics.Motor|X06DA-ES-SH1:TRX1|||true