diff --git a/src/cpp/include/IMPL/AccessChecked.h b/src/cpp/include/IMPL/AccessChecked.h
index 3cb5fc988..ada5e8dd9 100644
--- a/src/cpp/include/IMPL/AccessChecked.h
+++ b/src/cpp/include/IMPL/AccessChecked.h
@@ -22,6 +22,7 @@ namespace IMPL {
     
   public:
     AccessChecked() ;
+    AccessChecked(const AccessChecked&) = default;
     virtual ~AccessChecked() = default;
     virtual int simpleUID() const { return _id ; }