diff --git a/SAS/TMSS/backend/src/tmss/tmssapp/adapters/parset.py b/SAS/TMSS/backend/src/tmss/tmssapp/adapters/parset.py
index 3421b0e41c4cf0c6420d4028b78654047714605b..10c53c24ad168806ddd9256d3f6723f5fc4c8cd8 100644
--- a/SAS/TMSS/backend/src/tmss/tmssapp/adapters/parset.py
+++ b/SAS/TMSS/backend/src/tmss/tmssapp/adapters/parset.py
@@ -404,8 +404,8 @@ def _convert_to_parset_dict_for_observationcontrol_schema(subtask: models.Subtas
         parset[prefix+"ObservationControl.OnlineControl.inspectionHost"] = 'head.cep4.control.lofar'
         parset[prefix+"ObservationControl.OnlineControl.inspectionProgram"] = 'inspection-plots-observation.sh'
         parset[prefix+"ObservationControl.StationControl._hostname"] = parset["Observation.VirtualInstrument.stationList"]
-        parset[prefix+"ObservationControl.StationControl.aartfaacPiggybackAllowed"] = sub.piggyback_allowed_tbb
-        parset[prefix+"ObservationControl.StationControl.tbbPiggybackAllowed"] = sub.piggyback_allowed_aartfaac
+        parset[prefix+"ObservationControl.StationControl.aartfaacPiggybackAllowed"] = sub.piggyback_allowed_aartfaac
+        parset[prefix + "ObservationControl.StationControl.tbbPiggybackAllowed"] = sub.piggyback_allowed_tbb
 
     return parset