diff --git a/UserCode/Timing/python/HeterogeneousRecHitsTiming_cfg.py b/UserCode/Timing/python/HeterogeneousRecHitsTiming_cfg.py
index cd92bb92a96ab..d7eb5d19a47f7 100644
--- a/UserCode/Timing/python/HeterogeneousRecHitsTiming_cfg.py
+++ b/UserCode/Timing/python/HeterogeneousRecHitsTiming_cfg.py
@@ -12,6 +12,11 @@
            F.multiplicity.singleton,
            F.varType.bool,
            "Whether to run with GPUs or CPUs.")
+F.register('PU',
+           0,
+           F.multiplicity.singleton,
+           F.varType.int,
+           "Pileup to consider.")
 F.parseArguments()
 print("********************")
 print("Input arguments:")
@@ -46,8 +51,9 @@
 fNames = ['file:' + it for it in glob][:]
 """
 #fNames = ['file:/afs/cern.ch/user/b/bfontana/CMSSW_11_2_0_pre5/src/23234.0_TTbar_14TeV+2026D49+TTbar_14TeV_TuneCP5_GenSimHLBeamSpot14+DigiTrigger+RecoGlobal+HARVESTGlobal/step3.root']
-indir = '/eos/user/b/bfontana/Samples/GPU/'
-fNames = [os.path.join('file:'+indir, 'step3_ttbar_D49_1120pre1_20Events_3.root')]
+indir = '/eos/user/b/bfontana/Samples/'
+fNames = ['file:' + os.path.join(indir, 'step3_ttbar_PU0.root') ]
+
 keep = 'keep *'
 drop = 'drop CSCDetIdCSCALCTPreTriggerDigiMuonDigiCollection_simCscTriggerPrimitiveDigis__HLT'
 process.source = cms.Source("PoolSource",