diff --git a/opml2csv.rb b/opml2csv.rb
old mode 100644
new mode 100755
index 8e0500f..d60bbc5
--- a/opml2csv.rb
+++ b/opml2csv.rb
@@ -1,3 +1,4 @@
+#!/usr/bin/env ruby
 require 'csv'
 require 'open-uri'
 require "rexml/document"