diff --git a/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp b/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
index 65980c95262..c6b3f4da814 100644
--- a/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
+++ b/Surface_mesher/demo/Surface_mesher/qt4-demo/mainwindow.cpp
@@ -12,7 +12,6 @@
 #include <QDoubleSpinBox>
 #include <QLabel>
 
-#include "get_polyhedral_surface.h"
 #include <QGLViewer/vec.h>
 
 #include "ui_meshing_bar.h"