diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 7d862ed3117168a8d632171b161fc7deafaaf9c4..5b1f7e5a4c2a069ab6330e6e70c68b692c26a85c 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -60,7 +60,7 @@ dd4hep_enable_tests (
   DDG4_MySensDet
   DDCodex
   )
-if ( "${ROOT_VERSION}" VERSION_GREATER "6.17.00" )
+if ( "${ROOT_VERSION}" VERSION_GREATER "6.20.00" )
   dd4hep_enable_tests (
     OpticalSurfaces
     )