diff --git a/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/InDetTrackSystematicsTools/JetTrackFilterTool.h b/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/InDetTrackSystematicsTools/JetTrackFilterTool.h
index 57f4404e83d7e36de469b22e415703e5d9514815..2d550eb4c60741fc893d19c20ccc3ebcca2a9f6d 100644
--- a/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/InDetTrackSystematicsTools/JetTrackFilterTool.h
+++ b/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/InDetTrackSystematicsTools/JetTrackFilterTool.h
@@ -76,7 +76,7 @@ namespace InDet {
     // allow the user to configure which calibration file to use if desired
     std::string m_calibFileNomEff;
 
-    double m_effUncertTIDE = 0.012;
+    double m_effUncertTIDE = 0.24;
     double m_fakeUncertTIDE = 0.35;
 
     ToolHandle< IInDetTrackTruthOriginTool > m_trackOriginTool;
diff --git a/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/Root/JetTrackFilterTool.cxx b/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/Root/JetTrackFilterTool.cxx
index 19449e971609ae522b03abe647285fa52f3842cf..c1885e35fea748a1df81ebb367a95eb11418ea11 100644
--- a/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/Root/JetTrackFilterTool.cxx
+++ b/PhysicsAnalysis/TrackingID/InDetTrackSystematicsTools/Root/JetTrackFilterTool.cxx
@@ -37,6 +37,7 @@ namespace InDet {
     declareProperty("DeltaR", m_deltaR, "Delta-R cut in which to apply jet-track efficiency rejection");
     declareProperty("trkEffSystScale", m_trkEffSystScale, "Option to scale the effect of the systematic (default 1)");
     declareProperty("FakeUncertainty",  m_fakeUncertTIDE, "Option to set the fake uncertainty");
+    declareProperty("FLostUncertainty",  m_effUncertTIDE, "Option to set the uncertainty on FLost");
     declareProperty("calibFileNomEff", m_calibFileNomEff = "InDetTrackSystematicsTools/CalibData_22.0_2022-v00/TrackingRecommendations_prelim_rel22.root");
     declareProperty("trackOriginTool", m_trackOriginTool);
   }