diff --git a/benchmarks/ecal/run_emcal_benchmarks.py b/benchmarks/ecal/run_emcal_benchmarks.py
index 933bbf6146c71beffc328a9012381124a04e39e9..f5af0890e2a118fa8f4773c49451997e7d89fbdc 100755
--- a/benchmarks/ecal/run_emcal_benchmarks.py
+++ b/benchmarks/ecal/run_emcal_benchmarks.py
@@ -105,7 +105,7 @@ if 'rec' in procs:
     os.environ['JUGGLER_N_EVENTS'] = '{}'.format(args.nev)
 
     os.environ['JANA_HOME'] = '/usr/local/lib/EICrecon'
-    rec_cmd = ['eicrecon', f'-Ppodio:output_file={rec_file}']
+    rec_cmd = ['eicrecon', f'-Ppodio:output_file={rec_file}', sim_file]
     return_code = subprocess.run(rec_cmd).returncode
     if return_code is not None and return_code < 0:
         print('ERROR running eicrecon ({})!'.format(opt))