diff --git a/compact/solenoid.xml b/compact/solenoid.xml
index 42303bdf33def3d3316b842c7136b2e8f7297c77..7efe56aeba192339735430e6442c4e0b07cf67de 100644
--- a/compact/solenoid.xml
+++ b/compact/solenoid.xml
@@ -162,7 +162,7 @@
         inner_r="SolenoidBarrelCoilFormer_rmin" 
         outer_z="SolenoidBarrelCoilFormer_zmax" 
         vis="SolenoidCryostatVis">
-        <slice material="Aluminum" thickness="SolenoidBarrelCoilFormerThickness"/>
+        <slice material="Steel235" thickness="SolenoidBarrelCoilFormerThickness"/>
       </layer>
       <layer id="8" 
         inner_r="SolenoidBarrelCoil_rmin" 
@@ -174,7 +174,7 @@
         inner_r="SolenoidBarrelCoilOverbind_rmin" 
         outer_z="SolenoidBarrelCoilOverbind_zmax" 
         vis="SolenoidCryostatVis">
-        <slice material="Steel235" thickness="SolenoidBarrelCoilOverbindThickness"/>
+        <slice material="Aluminum" thickness="SolenoidBarrelCoilOverbindThickness"/>
       </layer>
 
       <layer id="10"