diff --git a/Trigger/TrigValidation/TrigInDetValidation/share/TrigInDetValidation_AODtoTrkNtuple.py b/Trigger/TrigValidation/TrigInDetValidation/share/TrigInDetValidation_AODtoTrkNtuple.py
index d7f1351ceda9881e6abf99e2e795a2f14c012335..5b204531fcb59da973f193cf859a11e9fe1aec87 100644
--- a/Trigger/TrigValidation/TrigInDetValidation/share/TrigInDetValidation_AODtoTrkNtuple.py
+++ b/Trigger/TrigValidation/TrigInDetValidation/share/TrigInDetValidation_AODtoTrkNtuple.py
@@ -7,6 +7,7 @@ FilesInput = [ "AOD.pool.root" ]
 theApp.EvtMax=-1                                       #says how many events to run over. Set to -1 for all events
 
 from AthenaConfiguration.AllConfigFlags import ConfigFlags
+ConfigFlags.Input.Files = FilesInput
 
 import AthenaPoolCnvSvc.ReadAthenaPool                   #sets up reading of POOL files (e.g. xAODs)
 # svcMgr.EventSelector.InputCollections=[os.environ['ASG_TEST_FILE_DATA']] #replace with input file