diff --git a/Triangulation/include/CGAL/Triangulation_full_cell.h b/Triangulation/include/CGAL/Triangulation_full_cell.h
index 66250784d89..b806ab6baf4 100644
--- a/Triangulation/include/CGAL/Triangulation_full_cell.h
+++ b/Triangulation/include/CGAL/Triangulation_full_cell.h
@@ -42,7 +42,7 @@ public:
     typedef typename TriangulationTraits::Point_d       Point_d;
 
 private: // DATA MEMBERS
-    Data    data_;
+    CGAL_NO_UNIQUE_ADDRESS Data    data_;
 
 public:
 
diff --git a/Triangulation/include/CGAL/Triangulation_vertex.h b/Triangulation/include/CGAL/Triangulation_vertex.h
index 99910d52dfc..5cbbeb76977 100644
--- a/Triangulation/include/CGAL/Triangulation_vertex.h
+++ b/Triangulation/include/CGAL/Triangulation_vertex.h
@@ -45,7 +45,7 @@ public:
 
 private: // DATA MEMBERS
     Point       point_;
-    Data        data_;
+    CGAL_NO_UNIQUE_ADDRESS Data        data_;
 
 public:
     template< typename T >