diff --git a/Reconstruction/RecPFACyber/script/sim.py b/Reconstruction/RecPFACyber/script/sim.py
index 2c5f1fe1b3df8ccab594010d79eb943d5c7b8d06..3640860089fc415ceeb1f19a476fa4872fde0188 100644
--- a/Reconstruction/RecPFACyber/script/sim.py
+++ b/Reconstruction/RecPFACyber/script/sim.py
@@ -84,7 +84,7 @@ detsimalg.RootDetElem = "WorldDetElemTool"
 from Configurables import TimeProjectionChamberSensDetTool
 tpc_sensdettool = TimeProjectionChamberSensDetTool("TimeProjectionChamberSensDetTool")
 tpc_sensdettool.TypeOption = 1
-tpc_sensdettool.DoHeedSim = True
+tpc_sensdettool.DoHeedSim = False#True
 dedxoption = "TrackHeedSimTool"
 tpc_sensdettool.DedxSimTool = dedxoption