diff --git a/compact/definitions.xml b/compact/definitions.xml
index ab5d0b01319a708d8c1050cb87605e94fca26b73..62fa035c1fb980531afc6b6d6da3d15d1b65195f 100644
--- a/compact/definitions.xml
+++ b/compact/definitions.xml
@@ -655,18 +655,18 @@
     -->
 
     <comment> Global parameters </comment>
-    <constant name="ffi_ZDC_width"             value="60.0 * cm"/>
-    <constant name="ffi_ZDC_thickness"         value="61.0 * cm"/><comment> Changed from 200.0 cm </comment>
+    <constant name="ffi_ZDC_width"             value="65.0 * cm"/>
+    <constant name="ffi_ZDC_thickness"         value="10.0 * cm"/><comment> Changed from 200.0 cm </comment>
     <comment> Original Global parameters </comment>     
     <!--
     <constant name="ffi_ZDC_thickness"         value="250.0 * cm"/>
     -->     
-    <constant name="ffi_ZDC_ECAL_thickness"    value="30.0 * cm"/>
+    <constant name="ffi_ZDC_ECAL_thickness"    value="10.0 * cm"/>
     <constant name="ffi_ZDC_ECAL_inner_radius" value="0.0 * cm"/>
     <constant name="ffi_ZDC_ECAL_outer_radius" value="60.0 * cm"/>
     <constant name="ffi_ZDC_ECAL_width"        value="5.0 * cm"/>
     <constant name="ffi_ZDC_ECAL_gap"          value="5.0 * mm"/>
-    <constant name="ffi_ZDC_ECAL_ntower"       value="10"/>
+    <constant name="ffi_ZDC_ECAL_ntower"       value="12"/>
     <comment> Original number of towers parameter  </comment> 
     <!--
     <constant name="ffi_ZDC_ECAL_ntower"       value="20"/>