diff --git a/lib/ever2boost/evernote_authorizer.rb b/lib/ever2boost/evernote_authorizer.rb
index 2c1f981..176e88c 100644
--- a/lib/ever2boost/evernote_authorizer.rb
+++ b/lib/ever2boost/evernote_authorizer.rb
@@ -2,6 +2,7 @@
 require 'ever2boost/note'
 require 'ever2boost/note_list'
 require 'ever2boost/util'
+require 'fileutils'
 
 module Ever2boost
   class EvernoteAuthorizer