diff --git a/Straight_skeleton_2/examples/Straight_skeleton_2/Low_level_API.cpp b/Straight_skeleton_2/examples/Straight_skeleton_2/Low_level_API.cpp
index 36259c3e729..1cba9c43bd8 100644
--- a/Straight_skeleton_2/examples/Straight_skeleton_2/Low_level_API.cpp
+++ b/Straight_skeleton_2/examples/Straight_skeleton_2/Low_level_API.cpp
@@ -6,7 +6,6 @@
 
 #include<boost/shared_ptr.hpp>
 
-#include<CGAL/Cartesian.h>
 #include<CGAL/Polygon_2.h>
 #include<CGAL/Exact_predicates_inexact_constructions_kernel.h>
 #include<CGAL/Straight_skeleton_builder_2.h>