diff --git a/ophyd_devices/epics/db/x07ma_database.yaml b/ophyd_devices/epics/db/x07ma_database.yaml
index e701113..7083402 100644
--- a/ophyd_devices/epics/db/x07ma_database.yaml
+++ b/ophyd_devices/epics/db/x07ma_database.yaml
@@ -129,7 +129,7 @@ sample_rot:
 harmonic:
   description: 'ID harmonic'
   deviceClass: EpicsSignal
-  deviceConfig: {name: harmonic, prefix: 'X07MA-ID:HARMONIC'}
+  deviceConfig: {name: harmonic, read_pv: 'X07MA-ID:HARMONIC'}
   acquisitionConfig: {acquisitionGroup: monitor, readoutPriority: baseline, schedule: sync}
   onFailure: retry
   status: {enabled: true}