diff --git a/Reconstruction/RecoTools/TrackToCalo/python/CaloExtensionBuilderAlgCfg.py b/Reconstruction/RecoTools/TrackToCalo/python/CaloExtensionBuilderAlgCfg.py
index 576e4c5c6ac1379d5db391ca627f8b30c621f0f3..adec65038199b9a096ba0d3e5f22886ef8899045 100644
--- a/Reconstruction/RecoTools/TrackToCalo/python/CaloExtensionBuilderAlgCfg.py
+++ b/Reconstruction/RecoTools/TrackToCalo/python/CaloExtensionBuilderAlgCfg.py
@@ -1,13 +1,14 @@
-# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 from AthenaConfiguration.ComponentFactory import CompFactory
 
-def getCaloExtenstionBuilderAlgorithm(inputFlags):
+def CaloExtensionBuilderAlgCfg(inputFlags):
     from TrkConfig.AtlasExtrapolatorConfig import AtlasExtrapolatorCfg    
     Trk__ParticleCaloExtensionTool = CompFactory.Trk.ParticleCaloExtensionTool
-    extrapPFlowCfg = AtlasExtrapolatorCfg(inputFlags)
-    pcExtensionTool = Trk__ParticleCaloExtensionTool(Extrapolator = extrapPFlowCfg.popPrivateTools())
+    result = AtlasExtrapolatorCfg(inputFlags)
+    pcExtensionTool = Trk__ParticleCaloExtensionTool(Extrapolator = result.popPrivateTools())
         
     CaloExtensionBuilderAlg = CompFactory.Trk.CaloExtensionBuilderAlg 
     CaloExtensionBuilderAlg = CaloExtensionBuilderAlg(LastCaloExtentionTool = pcExtensionTool)
+    result.addEventAlgo (CaloExtensionBuilderAlg)
      
-    return CaloExtensionBuilderAlg
+    return result