diff --git a/compact/ecal.xml b/compact/ecal.xml
index 1bb5c23f05ba26a98bb47cb402abbec346c60e20..410f3b947d51df2ba337aeb2737ef875671ca594 100644
--- a/compact/ecal.xml
+++ b/compact/ecal.xml
@@ -3,9 +3,9 @@
   <define>
     <constant name="CrystalEndcap_rmin"  value="VertexTrackerInnerRadius"/>
     <constant name="CrystalEndcap_rmax"  value="EcalEndcapN_rmin"/>
-    <constant name="CrystalBox_x_length" value="20.0*mm"/>
-    <constant name="CrystalBox_y_length" value="20.0*mm"/>
-    <constant name="CrystalBox_z_length" value="200.0*mm"/>
+    <constant name="CrystalBox_x_length" value="25.0*mm"/>
+    <constant name="CrystalBox_y_length" value="25.0*mm"/>
+    <constant name="CrystalBox_z_length" value="250.0*mm"/>
     <constant name="CrystalBox_offset"   value="0.000001*mm"/>
     <constant name="CrystalEndcap_x_pos" value="0.0*m"/>
     <constant name="CrystalEndcap_y_pos" value="0.0*m"/>