diff --git a/Basic_viewer/include/CGAL/Qt/Basic_viewer.h b/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
index 81325a2fa25b..8f7869441132 100644
--- a/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
+++ b/Basic_viewer/include/CGAL/Qt/Basic_viewer.h
@@ -1415,6 +1415,7 @@ class Basic_viewer : public CGAL::QGLViewer
           if (is_two_dimensional())
           { displayMessage(QString("Viewer is in 2D mode.")); }
           else { displayMessage(QString("Viewer is in 3D mode.")); }
+          set_camera_mode();
           update();
         }
       }