diff --git a/data/gtkbg b/data/gtkbg
index 79b8872..741dc15 100644
--- a/data/gtkbg
+++ b/data/gtkbg
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 # Copyright 2008-2010 Calculate Ltd. http://www.calculate-linux.org
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/data/xdm b/data/xdm
index 7674497..c0e2d08 100755
--- a/data/xdm
+++ b/data/xdm
@@ -66,7 +66,7 @@ die_xmes() {
 gtk_background(){
 	if [[ -n $(env | grep RUNNING_UNDER_GDM=true) ]];
 	then
-		python /usr/share/calculate/xdm/gtkbg
+		/usr/bin/env python2 /usr/share/calculate/xdm/gtkbg
 		BG_PID=$(ps ax | sed -nr "s/^\s*([0-9]+)\s.*gtkbg$/\1/p")
 	fi
 }