diff --git a/DDCore/src/VolumeManager.cpp b/DDCore/src/VolumeManager.cpp
index be49f9b4f3c770258d33398e339f1926e0871e2d..d73e118eed131025bd5d8555f3f8f489d0f28582 100644
--- a/DDCore/src/VolumeManager.cpp
+++ b/DDCore/src/VolumeManager.cpp
@@ -268,6 +268,7 @@ namespace dd4hep {
             context->element    = e;
             if ( nodes.size() > 0 )  {
               ContextExtension* ext = new(_getExtension(context)) ContextExtension();
+	      context->flag=true ;
               ext->placement  = PlacedVolume(n);
               for (size_t i = nodes.size(); i > 1; --i) {   // Omit the placement of the parent DetElement
                 TGeoMatrix* m = nodes[i-1]->GetMatrix();