diff --git a/topside/ecal_wAstroPixSiW.xml b/topside/ecal_wAstroPixSiW.xml
index 28962e96b8cf35dbc2b97ff4ef86991267fe3657..4db29c8f7e26c076f186ffca21cf23233efe9427 100644
--- a/topside/ecal_wAstroPixSiW.xml
+++ b/topside/ecal_wAstroPixSiW.xml
@@ -93,7 +93,7 @@
         <slice material="TungstenDens24" thickness="EcalBarrelAstroPix_TungstenThickness3"/>
         <slice material="Air" thickness="EcalBarrelAstroPix_LayerSpacing - EcalBarrelAstroPix_TungstenThickness3"/>
       </layer> -->
-      <layer repeat="20">
+      <layer repeat="25">
         <slice material="Silicon" thickness="EcalBarrelAstroPix_SiliconThickness" sensitive="yes" limits="cal_limits"/>
         <slice material="Silicon" thickness="EcalBarrelAstroPix_ElectronicsThickness"/>
         <slice material="Copper" thickness="EcalBarrelAstroPix_CopperThickness"/>