diff --git a/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_3_mesh_standard_cell_criteria.h b/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_mesh_standard_cell_criteria.h
similarity index 100%
rename from Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_3_mesh_standard_cell_criteria.h
rename to Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_mesh_standard_cell_criteria.h
diff --git a/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_3_mesh_standard_facet_criteria.h b/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_mesh_standard_facet_criteria.h
similarity index 100%
rename from Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_3_mesh_standard_facet_criteria.h
rename to Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_3/periodic_mesh_standard_facet_criteria.h
diff --git a/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_cell_criteria_3.h b/Periodic_3_mesh_3/include/CGAL/Periodic_mesh_cell_criteria_3.h
similarity index 100%
rename from Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_cell_criteria_3.h
rename to Periodic_3_mesh_3/include/CGAL/Periodic_mesh_cell_criteria_3.h
diff --git a/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_criteria_3.h b/Periodic_3_mesh_3/include/CGAL/Periodic_mesh_criteria_3.h
similarity index 100%
rename from Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_criteria_3.h
rename to Periodic_3_mesh_3/include/CGAL/Periodic_mesh_criteria_3.h
diff --git a/Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_facet_criteria_3.h b/Periodic_3_mesh_3/include/CGAL/Periodic_mesh_facet_criteria_3.h
similarity index 100%
rename from Periodic_3_mesh_3/include/CGAL/Periodic_3_mesh_facet_criteria_3.h
rename to Periodic_3_mesh_3/include/CGAL/Periodic_mesh_facet_criteria_3.h