diff --git a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3.h b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3.h
index 66e11bd453c..c6e4f6f9e24 100644
--- a/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3.h
+++ b/Periodic_3_triangulation_3/include/CGAL/Periodic_3_triangulation_3.h
@@ -265,6 +265,8 @@ public:
   {
   }
   
+  virtual ~Periodic_3_triangulation_3 () {}
+
   /** @name Assignment */ //@{
   Periodic_3_triangulation_3 & operator=(Periodic_3_triangulation_3& tr) {
     swap(tr);