diff --git a/VistaCoreLibs/VistaDataFlowNet/VdfnDriverSensorNode.cpp b/VistaCoreLibs/VistaDataFlowNet/VdfnDriverSensorNode.cpp
index 94135d7cb589a06292fe74645a69c5eb8bbcc811..f17e4d95498ecf9c8d4d7706d7959e69edf90da6 100644
--- a/VistaCoreLibs/VistaDataFlowNet/VdfnDriverSensorNode.cpp
+++ b/VistaCoreLibs/VistaDataFlowNet/VdfnDriverSensorNode.cpp
@@ -49,7 +49,6 @@ VdfnDriverSensorNode::VdfnDriverSensorNode( VistaDeviceSensor *pSensor, VistaSen
   m_pHistoryPort( new HistoryPort ),
   m_nOldMeasureCount(0),
   m_nLastUpdateIdx(0),
-  m_nOldScore(0),
   m_nLastUpdateTsFromReadState(0)
 {
 	RegisterOutPort( "history",  m_pHistoryPort );