diff --git a/benchmarks/clustering/options/full_cal_reco.py b/benchmarks/clustering/options/full_cal_reco.py
index e757b3bfaefde8bb0d71cc85ca9ef7f889b99cd7..a42d4199421f551f20b9947808ab2eed8cae224c 100644
--- a/benchmarks/clustering/options/full_cal_reco.py
+++ b/benchmarks/clustering/options/full_cal_reco.py
@@ -58,8 +58,8 @@ sim_coll = [
     "EcalEndcapNHits",
     "EcalEndcapPHits",
     "EcalBarrelHits",
-    "HcalBarrelHits",
     "EcalBarrelScFiHits",
+    "HcalBarrelHits",
     "HcalEndcapPHits",
     "HcalEndcapNHits",
 ]
@@ -133,8 +133,10 @@ ci_ecal_merger = CalHitsMerger("ci_ecal_merger",
         # OutputLevel=DEBUG,
         inputHitCollection=ci_ecal_reco.outputHitCollection,
         outputHitCollection="EcalEndcapPHitsRecoXY",
-        fields=["layer", "slice"],
-        fieldRefNumbers=[1, 0],
+        # fields=["layer", "slice"],
+        # fieldRefNumbers=[1, 0],
+        fields=["fiber_x", "fiber_y"],
+        fieldRefNumbers=[1, 1],
         readoutClass="EcalEndcapPHits")
 
 ci_ecal_cl = IslandCluster("ci_ecal_cl",
diff --git a/benchmarks/ecal/options/endcap_i.py b/benchmarks/ecal/options/endcap_i.py
index 43a2b1582612c928f3b6880c5ec533304690912c..0bd79e2c6b00389075a38ebde34d20e7bd31f79d 100644
--- a/benchmarks/ecal/options/endcap_i.py
+++ b/benchmarks/ecal/options/endcap_i.py
@@ -69,8 +69,10 @@ ci_ecal_merger = CalHitsMerger("ci_ecal_merger",
         # OutputLevel=DEBUG,
         inputHitCollection=ci_ecal_reco.outputHitCollection,
         outputHitCollection="EcalEndcapPHitsRecoXY",
-        fields=["layer", "slice"],
-        fieldRefNumbers=[1, 0],
+        fields=["fiber_x", "fiber_y"],
+        fieldRefNumbers=[1, 1],
+        # fields=["layer", "slice"],
+        # fieldRefNumbers=[1, 0],
         readoutClass="EcalEndcapPHits")
 
 ci_ecal_cl = IslandCluster("ci_ecal_cl",