diff --git a/Detector/DetFCCeeIDEA/compact/DriftChamber_materials.xml b/Detector/DetFCCeeIDEA/compact/DriftChamber_materials.xml
index 943c8b96..748715e7 100644
--- a/Detector/DetFCCeeIDEA/compact/DriftChamber_materials.xml
+++ b/Detector/DetFCCeeIDEA/compact/DriftChamber_materials.xml
@@ -1,393 +1,382 @@
-<!--
-    (c) Copyright 2020 CERN for the benefit of the LHCb Collaboration
-
-    This software is distributed under the terms of the GNU General Public
-    Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".
-
-    In applying this licence, CERN does not waive the privileges and immunities
-    granted to it by virtue of its status as an Intergovernmental Organization
-    or submit itself to any jurisdiction.
--->
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+    <fraction n="1" ref="Pb0x56335e88b110"/>
+  </material>
 
 </materials>
diff --git a/Detector/DetFCCeeIDEA/compact/DriftChamber_parameters.xml b/Detector/DetFCCeeIDEA/compact/DriftChamber_parameters.xml
index 05e1d868..cf5163cd 100644
--- a/Detector/DetFCCeeIDEA/compact/DriftChamber_parameters.xml
+++ b/Detector/DetFCCeeIDEA/compact/DriftChamber_parameters.xml
@@ -1,18 +1,6 @@
 <lccdd>
-<!--
-    (c) Copyright 2021 CERN for the benefit of the LHCb Collaboration
-
-    This software is distributed under the terms of the GNU General Public
-    Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".
-
-    In applying this licence, CERN does not waive the privileges and immunities
-    granted to it by virtue of its status as an Intergovernmental Organization
-    or submit itself to any jurisdiction.
--->
  <define>
 
-
-
 <!-- %%%%%%                      Central Drift Chamber Basic Parameters                 %%%%%% -->
 
   <constant name = "CDCH:r0"                     value = "345.0*mm"/>