diff --git a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
index 379edc0b6d68a6f2d955d7a0a896f9c37f7a3796..4c3f8b6234dd8c6826ca5c485a617bc59cf7d286 100644
--- a/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
+++ b/Simulation/ISF/ISF_FastCaloSim/ISF_FastCaloSimServices/src/FastCaloSimV2Tool.cxx
@@ -198,7 +198,7 @@ StatusCode ISF::FastCaloSimV2Tool::simulate(const ISF::ISFParticle& isfp, ISFPar
 
   TFCSExtrapolationState extrapol;
   m_FastCaloSimCaloExtrapolation->extrapolate(extrapol,&truth);
-  ATHRNG::RNGWrapper* rngWrapper = m_rndmGenSvc->getEngine(this);
+  ATHRNG::RNGWrapper* rngWrapper = m_rndmGenSvc->getEngine(this, m_randomEngineName);
   TFCSSimulationState simulstate(*rngWrapper);
 
   ATH_MSG_DEBUG(" particle: " << isfp.pdgCode() << " Ekin: " << isfp.ekin() << " position eta: " << particle_position.eta() << " direction eta: " << particle_direction.eta() << " position phi: " << particle_position.phi() << " direction phi: " << particle_direction.phi());