diff --git a/examples/DDCMS/CMakeLists.txt b/examples/DDCMS/CMakeLists.txt
index 6a793e00a178880cdeefc14f17d5fcca9dfc985d..07d20133d9b75b771c69c67c5b3613d7fef0d877 100644
--- a/examples/DDCMS/CMakeLists.txt
+++ b/examples/DDCMS/CMakeLists.txt
@@ -88,7 +88,7 @@ dd4hep_add_test_reg( DDCMS_NamespaceConstants
   EXEC_ARGS  geoPluginRun  -destroy -print WARNING
   -input file:${CMAKE_CURRENT_SOURCE_DIR}/data/cms_tracker.xml
   -plugin DD4hep_TestConstantsMultiplier
-  REGEX_PASS "Tested 2551 numeric constants for expression evaluation"
+  REGEX_PASS "Tested 2553 numeric constants for expression evaluation"
   REGEX_FAIL "Exception"
   REGEX_FAIL "FAILED"
   )
diff --git a/examples/DDCMS/data/cms_tracker.xml b/examples/DDCMS/data/cms_tracker.xml
index 54d2d99002e302d0d2205acff25ea1945f2d810a..8ef3706415f018356574bf08498a97ae61b0ea68 100644
--- a/examples/DDCMS/data/cms_tracker.xml
+++ b/examples/DDCMS/data/cms_tracker.xml
@@ -49,6 +49,7 @@
 
     <Include ref="vacuum.xml"/>
     <Include ref="cmsextent.xml"/>
+    <Include ref="cavernData.xml"/>
     <Include ref="cms.xml"/>
 
     <Include ref="pixfwdMaterials.xml"/>