diff --git a/Minkowski_sum_3/examples/Minkowski_sum_3/cube_offset.cpp b/Minkowski_sum_3/examples/Minkowski_sum_3/cube_offset.cpp
index 78a01261e0a..fb14d1dec73 100644
--- a/Minkowski_sum_3/examples/Minkowski_sum_3/cube_offset.cpp
+++ b/Minkowski_sum_3/examples/Minkowski_sum_3/cube_offset.cpp
@@ -5,8 +5,6 @@
 #include <CGAL/IO/Polyhedron_iostream.h>
 #include <CGAL/IO/Nef_polyhedron_iostream_3.h>
 #include <CGAL/minkowski_sum_3.h>
-#include <CGAL/IO/Qt_widget_Nef_3.h>
-#include <qapplication.h>
 #include <fstream>
 #include <iostream>
 
@@ -14,7 +12,7 @@ typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;
 typedef CGAL::Nef_polyhedron_3<Kernel,CGAL::SNC_indexed_items>     Nef_polyhedron;
 typedef CGAL::Polyhedron_3<Kernel>     Polyhedron;
 
-int main(int argc, char* argv[]) {
+int main() {
 
   Nef_polyhedron N0, N1;
   std::ifstream in("cube.nef3");