diff --git a/STL_Extension/include/CGAL/iterator.h b/STL_Extension/include/CGAL/iterator.h
index 44238dd2111..8d40cec8c38 100644
--- a/STL_Extension/include/CGAL/iterator.h
+++ b/STL_Extension/include/CGAL/iterator.h
@@ -43,6 +43,7 @@
 
 #include <vector>
 #include <map>
+#include <utility>
 
 namespace CGAL {
 
@@ -1324,6 +1325,14 @@ struct Derivator<D, std::tuple<V1, V...>, std::tuple<O1, O...> >
 
 } // internal
 
+namespace tuple_internal {
+template <typename ...Args, std::size_t ...Is>
+auto to_tuple(std::tuple<Args...> &t, std::index_sequence<Is...>)
+{
+  return std::tuple<Args&...>(std::get<Is>(t)...);
+}
+
+}//end namespace  tuple_internal
 
 // OutputIterator which accepts several types in *o++= and dispatches,
 // wraps several other output iterators, and dispatches accordingly.
@@ -1408,6 +1417,16 @@ public:
     tuple_dispatch(t);
     return *this;
   }
+  
+  operator std::tuple<O&...>()
+  {
+    return tuple_internal::to_tuple(*this, std::index_sequence_for<O...>{});
+  }
+  
+  operator std::tuple<const O&...>()const
+  {
+    return tuple_internal::to_tuple(*this, std::index_sequence_for<O...>{});
+  }
 };
 
 template < typename... V, typename... O>
@@ -1449,6 +1468,7 @@ public:
 
   template <class T>
   Self& operator=(const T&) { return *this; }
+
 };
 
 
diff --git a/Scripts/developer_scripts/cgal_check_dependencies.sh b/Scripts/developer_scripts/cgal_check_dependencies.sh
index 65b989a8ca2..0a8d7b34e14 100644
--- a/Scripts/developer_scripts/cgal_check_dependencies.sh
+++ b/Scripts/developer_scripts/cgal_check_dependencies.sh
@@ -30,7 +30,7 @@ do
   fi
 done
 
-cmake -DCGAL_HEADER_ONLY=FALSE -DCGAL_ENABLE_CHECK_HEADERS=TRUE -DDOXYGEN_EXECUTABLE="$DOX_PATH" -DCGAL_COPY_DEPENDENCIES=TRUE -DCMAKE_CXX_FLAGS="-std=c++11" ..
+cmake -DCGAL_HEADER_ONLY=FALSE -DCGAL_ENABLE_CHECK_HEADERS=TRUE -DDOXYGEN_EXECUTABLE="$DOX_PATH" -DCGAL_COPY_DEPENDENCIES=TRUE -DCMAKE_CXX_FLAGS="-std=c++14" ..
 if [ -n "$DO_CHECK_HEADERS" ]; then
     make -j$(nproc --all) -k check_headers
 fi