diff --git a/Simulation/G4Atlas/G4AtlasAlg/src/G4AtlasAlg.cxx b/Simulation/G4Atlas/G4AtlasAlg/src/G4AtlasAlg.cxx
index cccd099f6c44dd847d39daf58f6697a533219a8a..124880d4930bde924877b528316616f0bb4fdeef 100644
--- a/Simulation/G4Atlas/G4AtlasAlg/src/G4AtlasAlg.cxx
+++ b/Simulation/G4Atlas/G4AtlasAlg/src/G4AtlasAlg.cxx
@@ -198,8 +198,6 @@ void G4AtlasAlg::initializeOnce()
     ui->ApplyCommand("/MagneticField/Initialize");
   }
 
-  ui->ApplyCommand("/geometry/navigator/check_mode true");
-
   // Send UI commands
   for (auto g4command : m_g4commands) {
     ui->ApplyCommand( g4command );
diff --git a/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/src/TransportTool.cxx b/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/src/TransportTool.cxx
index 3bda992b7821ef7c744d5b0ecbc2f0970d72d564..820d227f7b52fcf2b3efed00b38c7288e5f8212a 100644
--- a/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/src/TransportTool.cxx
+++ b/Simulation/ISF/ISF_Geant4/ISF_Geant4Tools/src/TransportTool.cxx
@@ -171,9 +171,6 @@ void iGeant4::G4TransportTool::initializeOnce()
     ui->ApplyCommand("/MagneticField/Initialize");
   }
 
-  ATH_MSG_DEBUG("Setting checkmode to true");
-  ui->ApplyCommand("/geometry/navigator/check_mode true");
-
   if (m_rndmGen=="athena" || m_rndmGen=="ranecu")     {
     // Set the random number generator to AtRndmGen
     if (m_rndmGenSvc.retrieve().isFailure()) {