diff --git a/documentation/src/boxes2rst b/documentation/src/boxes2rst
index f7b5b86..ec1db45 100755
--- a/documentation/src/boxes2rst
+++ b/documentation/src/boxes2rst
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 # Copyright (C) 2017 Florian Festi
 #
 #   This program is free software: you can redistribute it and/or modify