diff --git a/Triangulation_3/include/CGAL/Triangulation_ds_circulators_3.h b/Triangulation_3/include/CGAL/Triangulation_ds_circulators_3.h
index 2ea38e78740..a984722c4c9 100644
--- a/Triangulation_3/include/CGAL/Triangulation_ds_circulators_3.h
+++ b/Triangulation_3/include/CGAL/Triangulation_ds_circulators_3.h
@@ -191,6 +191,7 @@ operator!=(typename Tds_::Cell_handle ch, Triangulation_ds_cell_circulator_3<Tds
   return !(cc==ch);
 }
 #endif
+
 template < class Tds_ >
 class Triangulation_ds_facet_circulator_3
   : public Bidirectional_circulator_base<typename Tds_::Facet,
@@ -357,6 +358,17 @@ public:
     return ! (*this == ccir);
   }
 
+  bool operator==(CGAL_NULL_TYPE c) const
+  {
+    CGAL_triangulation_assertion(c == CGAL_CIRC_NULL);
+    return pos == Cell_handle();
+  }
+
+  bool operator!=(CGAL_NULL_TYPE c) const
+  {
+    return ! (*this == c);
+  }
+
 private:
   Vertex_handle _s; // source vertex of the edge
   Vertex_handle _t; // target vertex of the edge
diff --git a/Triangulation_3/test/Triangulation_3/include/CGAL/_test_cls_circulator.C b/Triangulation_3/test/Triangulation_3/include/CGAL/_test_cls_circulator.C
index eda9b6c7647..99a2995aa5a 100644
--- a/Triangulation_3/test/Triangulation_3/include/CGAL/_test_cls_circulator.C
+++ b/Triangulation_3/test/Triangulation_3/include/CGAL/_test_cls_circulator.C
@@ -128,7 +128,8 @@ _test_circulator( const Triangulation &T )
     assert( fit->second != (fit->first)->index(vh) );
   }
 
-   Facet_circulator fc, fc0;
+   Facet_circulator fc, fc0, fc1;
+   assert(fc1 == 0);
    int i,j;
    //   for (eit=T.edges_begin(); eit!=T.edges_end(); eit++)
    eit=T.edges_begin(); // test (edge)