diff --git a/reference_detector.xml b/reference_detector.xml
index cfb1dcbddea31a5817af33e7fcb3b2efc03c00b0..60c1c2aa1052d906292e62e8b933d3f6af3dc776 100644
--- a/reference_detector.xml
+++ b/reference_detector.xml
@@ -116,7 +116,7 @@
 
   <include ref="compact/solenoid.xml"/>
   <include ref="compact/ecal.xml"/>
-  <!--include ref="compact/hcal.xml"/-->
+  <include ref="compact/hcal.xml"/>
   <include ref="compact/ce_GEM.xml"/>
   <include ref="compact/vertex_tracker.xml"/>
   <include ref="compact/gem_tracker_endcap.xml"/>