diff --git a/GraphicsView/include/CGAL/Qt/debug_impl.h b/GraphicsView/include/CGAL/Qt/debug_impl.h
index 21a9ee8fc4e..df44a8fc80d 100644
--- a/GraphicsView/include/CGAL/Qt/debug_impl.h
+++ b/GraphicsView/include/CGAL/Qt/debug_impl.h
@@ -28,7 +28,7 @@
 #include <CGAL/Qt/debug.h>
 #include <QDir>
 #include <iostream>
-#include <GL/gl.h>
+#include <CGAL/gl.h>
 namespace CGAL {
 namespace Qt {