diff --git a/Surface_mesh_skeletonization/test/Surface_mesh_skeletonization/skeleton_connectivity_test.cpp b/Surface_mesh_skeletonization/test/Surface_mesh_skeletonization/skeleton_connectivity_test.cpp
index 6ff44391452..c6984fac8a5 100644
--- a/Surface_mesh_skeletonization/test/Surface_mesh_skeletonization/skeleton_connectivity_test.cpp
+++ b/Surface_mesh_skeletonization/test/Surface_mesh_skeletonization/skeleton_connectivity_test.cpp
@@ -1,10 +1,10 @@
 #include <CGAL/Polyhedron_3.h>
 #include <CGAL/Polyhedron_items_with_id_3.h>
+#include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
 #include <CGAL/Simple_cartesian.h>
 #include <CGAL/extract_mean_curvature_flow_skeleton.h>
 #include <CGAL/Polygon_mesh_processing/connected_components.h>
 #include <CGAL/IO/Polyhedron_iostream.h>
-#include <CGAL/boost/graph/graph_traits_Polyhedron_3.h>
 
 #include <boost/foreach.hpp>