diff --git a/benchmarks/imaging_ecal/options/hybrid_cluster.py b/benchmarks/imaging_ecal/options/hybrid_cluster.py
index 06b60589c4f0a4c7549007e79801ab6f853254ff..50329c06bb784f67fc79cf788e5cbb3a917902a3 100644
--- a/benchmarks/imaging_ecal/options/hybrid_cluster.py
+++ b/benchmarks/imaging_ecal/options/hybrid_cluster.py
@@ -2,7 +2,7 @@ import json
 import os
 import ROOT
 from Gaudi.Configuration import *
-from GaudiKernel.SystemOfUnits import MeV, mm, cm, mrad, rad, ns
+from GaudiKernel.SystemOfUnits import GeV, MeV, mm, cm, mrad, rad, ns
 from Configurables import ApplicationMgr, EICDataSvc, PodioOutput, GeoSvc
 
 from Configurables import PodioInput