diff --git a/plugins/as_quote_it/lib/quote_it.rb b/plugins/as_quote_it/lib/quote_it.rb
index c9a037939..0c9478f34 100644
--- a/plugins/as_quote_it/lib/quote_it.rb
+++ b/plugins/as_quote_it/lib/quote_it.rb
@@ -3,7 +3,7 @@
 
 class AsakusaSatellite::Filter::QuoteIt < AsakusaSatellite::Filter::Base
  def process(text, opts={})
-   root = opts[:root] || 'http://quoteit.heroku.com'
+   root = opts[:root] || ENV['QUOTEIT_URL'] || 'http://quoteit.heroku.com'
    text.gsub URI.regexp(%w[http https]) do|url|
       begin
         open("#{root}/clip.html?u=#{CGI.escape url}").read