diff --git a/benchmarks/clustering/options/full_cal_reco.py b/benchmarks/clustering/options/full_cal_reco.py
index c6511ba336f377663d82f8603d6b2b8833cbb9a9..85411481a08eccc9f83d5db03a73799b1042638a 100644
--- a/benchmarks/clustering/options/full_cal_reco.py
+++ b/benchmarks/clustering/options/full_cal_reco.py
@@ -346,8 +346,8 @@ cb_hcal_merger = CalHitsMerger("cb_hcal_merger",
         inputHitCollection=cb_hcal_reco.outputHitCollection,
         outputHitCollection="HcalBarrelHitsRecoXY",
         readoutClass="HcalBarrelHits",
-        fields=["tile"],
-        fieldRefNumbers=[0])
+        fields=[],
+        fieldRefNumbers=[])
 algs.append(cb_hcal_merger)
 
 cb_hcal_cl = IslandCluster("cb_hcal_cl",