diff --git a/LArCalorimeter/LArCalibTools/src/LArSC2NtupleEB.cxx b/LArCalorimeter/LArCalibTools/src/LArSC2NtupleEB.cxx
index 215c90ea252d94003002df878383c74ada25fc3b..731990cab700298078b9afd0950d0dc6d722985e 100644
--- a/LArCalorimeter/LArCalibTools/src/LArSC2NtupleEB.cxx
+++ b/LArCalorimeter/LArCalibTools/src/LArSC2NtupleEB.cxx
@@ -254,7 +254,7 @@ StatusCode LArSC2NtupleEB::execute()
 
      if(truenet > iterSC->energies().size()) truenet=iterSC->energies().size();
      for( unsigned i=0; i<truenet;++i){  
-          if(fabs(iterSC->energies().at(i)) > m_eCut) { 
+          if(std::abs(iterSC->energies().at(i)) > m_eCut) { 
             if(etcontainer) {
                m_energyVec_ET[cellCounter][i]  = iterSC->energies().at(i);
                if(iterSC->bcids().size()) m_bcidVec_ET[cellCounter][i]  = iterSC->bcids().at(i);
@@ -276,7 +276,7 @@ StatusCode LArSC2NtupleEB::execute()
         truenet = m_recoNet;
         if(truenet > secondSC->energies().size()) truenet=secondSC->energies().size();
         for( unsigned i=0; i<truenet;++i){  
-          if(fabs(secondSC->energies().at(i)) > m_eCut) { 
+          if(std::abs(secondSC->energies().at(i)) > m_eCut) { 
             m_energyVec_Reco[cellCounter][i]  = secondSC->energies().at(i);
             if(m_energyVec_Reco[cellCounter][i] !=0) m_tauVec_Reco[cellCounter][i]  = secondSC->tauEnergies().at(i)/m_energyVec_Reco[cellCounter][i];
             m_passVec_Reco[cellCounter][i]  = secondSC->passTauSelection().at(i);