diff --git a/Linear_cell_complex/demo/Linear_cell_complex/MainWindow.cpp b/Linear_cell_complex/demo/Linear_cell_complex/MainWindow.cpp
index d400cb2c312..6dc77ef64b2 100644
--- a/Linear_cell_complex/demo/Linear_cell_complex/MainWindow.cpp
+++ b/Linear_cell_complex/demo/Linear_cell_complex/MainWindow.cpp
@@ -1302,6 +1302,7 @@ void MainWindow::onMengerDec()
 
   for(unsigned int i = 0; i < faces.size(); i++)
   {
+    std::cout<<"Remove face "<<i<<" "<<&*faces[i]<<std::endl;
     CGAL::remove_cell<LCC,2>(*scene.lcc, faces[i]);
   }