--- a/examples/network_wordcount.py
+++ b/examples/network_wordcount.py
@@ -1,4 +1,4 @@
-#! /usr/env python
+#!/usr/bin/python3
 """ a recreation of spark-streaming's network_wordcount
 
 https://spark.apache.org/docs/2.2.0/streaming-programming-guide.html#a-quick-example