diff --git a/config/devices.properties b/config/devices.properties
index cc3e05b..e90693e 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -19,3 +19,4 @@ adc_yh2=ch.psi.pshell.epics.ChannelInteger|SARFE10-PBPG050:HAMP-011-y-h2-DATA-SU
 m2rx=ch.psi.pshell.epics.Motor|SAROP21-OOMV096:W_RX|||true
 #camtool=ch.psi.pshell.bs.Camtool|localhost:10000|||
 invalid1=ch.psi.pshell.epics.ChannelDouble|SARUN15-UIND030:INVALID-PV -1 true Nullify|||true
+invalid2=ch.psi.pshell.epics.ChannelDouble|SARUN15-UIND030:INVALID-PV -1 false Exception|||