diff --git a/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/BeamBackgroundD3PDObject.py b/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/BeamBackgroundD3PDObject.py
index cbd5dfead50e73e0102692d90b08b26514256556..c914f3f330f45df5100ce6219a9673d5fbce3b29 100644
--- a/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/BeamBackgroundD3PDObject.py
+++ b/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/BeamBackgroundD3PDObject.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
 
 import BackgroundD3PDMaker
 import D3PDMakerCoreComps
@@ -10,6 +10,7 @@ from D3PDMakerCoreComps.D3PDObject import DeferArg
 
 import EventCommonD3PDMaker
 import CaloD3PDMaker
+import CaloSysD3PDMaker
 import JetD3PDMaker
 
 
@@ -44,7 +45,7 @@ ClusterAssoc.defineBlock (1, 'bbClusterKinematics',
                                WriteM = False)
 ClusterAssoc.defineBlock (1, 'bbClusterSamplingBasics',
                                CaloD3PDMaker.ClusterSamplingFillerTool)
-from CaloD3PDMaker import ClusterMomentFillerTool as CMFT
+from CaloSysD3PDMaker import ClusterMomentFillerTool as CMFT
 ClusterAssoc.defineBlock (1, 'bbClusterMoments', CMFT,
                                Moments = [CMFT.FIRST_ENG_DENS,   'firstEdens',
                                           CMFT.ENG_FRAC_MAX,     'cellmaxfrac',
@@ -58,7 +59,7 @@ ClusterAssoc.defineBlock (1, 'bbClusterMoments', CMFT,
                                           CMFT.DELTA_PHI,        'deltaPhi'
                                           ])
 ClusterAssoc.defineBlock (1, 'bbClusterTime',
-                               CaloD3PDMaker.ClusterTimeFillerTool)
+                               CaloSysD3PDMaker.ClusterTimeFillerTool)
 
 ClusterAssoc.defineBlock (1, 'bbClusterIndex', D3PDMakerCoreComps.IndexFillerTool,
     Target = '')
diff --git a/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/backgroundD3PD.py b/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/backgroundD3PD.py
index 897507f86332fdf07723efeffadbd6d28a345a2c..9eef81a97b76c2df30e355df0fa4cda5eaccedde 100644
--- a/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/backgroundD3PD.py
+++ b/PhysicsAnalysis/D3PDMaker/BackgroundD3PDMaker/python/backgroundD3PD.py
@@ -260,7 +260,7 @@ def backgroundD3PD (alg=None,
       alg += PixelClusterD3PDObject( 0 )
 
     if flags.doCaloClus():
-      from CaloD3PDMaker.ClusterD3PDObject import ClusterD3PDObject
+      from CaloSysD3PDMaker.ClusterD3PDObject import ClusterD3PDObject
       alg += ClusterD3PDObject( 1 )
 
     return alg