diff --git a/SimG4Core/CustomPhysics/src/FullModelHadronicProcess.cc b/SimG4Core/CustomPhysics/src/FullModelHadronicProcess.cc
index 61412807f58e5..2a58441a5c5c9 100644
--- a/SimG4Core/CustomPhysics/src/FullModelHadronicProcess.cc
+++ b/SimG4Core/CustomPhysics/src/FullModelHadronicProcess.cc
@@ -354,10 +354,7 @@ G4VParticleChange* FullModelHadronicProcess::PostStepDoIt(const G4Track& aTrack,
   G4LorentzVector p_g_cms = gluinoMomentum;  //gluino in CMS BEFORE collision
   p_g_cms.boost(trafo_full_cms);
 
-  double e = cloud_p4_new.e() + gluinoMomentum.e();
-  if (outgoingRhadron)
-    e += outgoingRhadron->GetPDGMass();
-  G4LorentzVector p4_new(cloud_p4_new.v() + gluinoMomentum.v(), e);
+  G4LorentzVector p4_new(cloud_p4_new.v() + gluinoMomentum.v(), outgoingRhadron->GetPDGMass());
   //  G4cout<<"P4-diff: "<<(p4_new-cloud_p4_new-gluinoMomentum)/GeV<<", magnitude: "
   // <<(p4_new-cloud_p4_new-gluinoMomentum).m()/MeV<<" MeV" <<G4endl;