diff --git a/benchmarks/barrel_ecal/scripts/emcal_barrel_particles_analysis.cxx b/benchmarks/barrel_ecal/scripts/emcal_barrel_particles_analysis.cxx
index 8405ff15c41a73838497136968c413427b563beb..0e35ac33bc6c380d0ebc69df2dd6c113e0f337a5 100644
--- a/benchmarks/barrel_ecal/scripts/emcal_barrel_particles_analysis.cxx
+++ b/benchmarks/barrel_ecal/scripts/emcal_barrel_particles_analysis.cxx
@@ -94,9 +94,10 @@ void emcal_barrel_particles_analysis(std::string particle_name = "electron", boo
   // Define variables
   auto d1 = d0.Define("Ethr", Ethr, {"mcparticles"})
                 .Define("nhits", nhits, {"EcalBarrelHits"})
-                .Define("Esim", Esim, {"EcalBarrelHits"})
+                .Define("EsimImg", Esim, {"EcalBarrelHits"})
                 .Define("EsimScFi", Esim, {"EcalBarrelScFiHits"})
-                .Define("fsam", fsam, {"Esim+EsimScFi", "Ethr"});
+                .Define("Esim", "EsimImg+EsimScFi")
+                .Define("fsam", fsam, {"Esim", "Ethr"});
 
   // Define Histograms
   auto hEthr = d1.Histo1D(