diff --git a/compact/cb_ECal_AMEGOX.xml b/compact/cb_ECal_AMEGOX.xml
index 5caa213cc1ab6bc5f675d576ba25d05c13f08615..b5089af724804bb8a65759805e70c152a91bffb0 100644
--- a/compact/cb_ECal_AMEGOX.xml
+++ b/compact/cb_ECal_AMEGOX.xml
@@ -70,8 +70,8 @@
   <!--  Definition of the readout segmentation/definition  -->
   <readouts>
     <readout name="EcalBarrelHits">
-      <segmentation type="CartesianGridXY" grid_size_x="2.0 * cm" grid_size_y="2.0 * cm"/>
-      <id>system:8,barrel:3,module:4,layer:6,slice:5,x:32:-16,y:-16</id>
+      <segmentation type="CartesianGridXY" grid_size_x="0.5 * mm" grid_size_y="0.5 * mm"/>
+      <id>system:8,barrel:3,module:4,layer:10,slice:5,x:32:-16,y:-16</id>
     </readout>
   </readouts>