diff --git a/generator/main.py b/generator/main.py
index a2be335b77..727ab7d34b 100644
--- a/generator/main.py
+++ b/generator/main.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python2
 # Copyright 2017 The NXT Authors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");