Index: src/Tools/freecad-thumbnailer.in
--- src/Tools/freecad-thumbnailer.in.orig
+++ src/Tools/freecad-thumbnailer.in
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!${LOCALBASE}/bin/python3
 # SPDX-License-Identifier: LGPL-2.1-or-later
 
 """Support file to show FreeCAD thumbnails on Free Desktop Environments (like GNOME or KDE)
