diff --git a/Basic_viewer/include/CGAL/Qt/Basic_viewer.h b/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
index 9e65309c741..7cf0870f380 100644
--- a/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
+++ b/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
@@ -14,6 +14,8 @@
 #ifndef CGAL_QT_BASIC_VIEWER_H
 #define CGAL_QT_BASIC_VIEWER_H
 
+#if defined(CGAL_USE_BASIC_VIEWER_QT)
+
 // TODO #include <CGAL/license/GraphicsView.h>
 #include <cstring>
 #include <iostream>
@@ -2031,4 +2033,6 @@ void draw_graphics_scene(const Graphics_scene& graphics_scene,
 
 } // End namespace CGAL
 
+#endif // CGAL_USE_BASIC_VIEWER_QT
+
 #endif // CGAL_QT_BASIC_VIEWER_H