diff --git a/reco/steer/CbmOnlineParWrite.cxx b/reco/steer/CbmOnlineParWrite.cxx
index 8cba04a714e38cfff14ef98690582991fc8ef29c..3b5fe641a552b0f276308f021acbcd8fca4f6fbf 100644
--- a/reco/steer/CbmOnlineParWrite.cxx
+++ b/reco/steer/CbmOnlineParWrite.cxx
@@ -280,7 +280,7 @@ void CbmOnlineParWrite::AddSts()
     sensorParSet->SetParSensor(addr05, sensor6cm);
     sensorParSet->SetParSensor(addr06, sensor12cm);
     sensorParSet->SetParSensor(addr07, sensor6cm);
-    sensorParSet->SetParSensor(addr08, sensor12cm);
+    sensorParSet->SetParSensor(addr08, sensor6cm);
     sensorParSet->SetParSensor(addr09, sensor6cm);
     sensorParSet->SetParSensor(addr10, sensor6cm);
     sensorParSet->SetParSensor(addr11, sensor12cm);