diff --git a/benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx b/benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx
index f969e112a3c7674bc425dd30235fb7f3e930fa70..04c8ecb0650bfa8e5e505771fd8769521bd5cc45 100644
--- a/benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx
+++ b/benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx
@@ -20,6 +20,7 @@
 #include "TF1.h"
 #include "TH1D.h"
 #include <TFitResult.h>
+#include "TSystem.h"
 
 using ROOT::RDataFrame;
 using namespace ROOT::VecOps;