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 31338f384e4..70f3fcb4e43 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
@@ -3594,13 +3594,10 @@ Periodic_3_triangulation_3<GT,TDS>::convert_to_27_sheeted_covering()
 
   // Create 27 copies of each cell from the respective copies of the
   // vertices and write virtual_cells and virtual_cells_reverse.
-  typedef std::map<Cell_handle, std::pair<Cell_handle, Offset> >
-      Virtual_cell_map;
   typedef std::map<Cell_handle, std::vector<Cell_handle > >
       Virtual_cell_reverse_map;
   typedef typename Virtual_cell_reverse_map::const_iterator VCRMIT;
 
-  Virtual_cell_map virtual_cells;
   Virtual_cell_reverse_map virtual_cells_reverse;
 
   std::list<Cell_handle> original_cells;
@@ -3633,7 +3630,6 @@ Periodic_3_triangulation_3<GT,TDS>::convert_to_27_sheeted_covering()
   for(typename std::list<Cell_handle>::iterator cit = original_cells.begin();
       cit != original_cells.end(); ++cit) {
     Cell_handle c_cp;
-    Vertex_handle v0,v1,v2,v3;
     std::vector<Cell_handle> copies;
     Virtual_vertex_reverse_map_it vvrmit[4];
     Offset vvoff[4];