diff --git a/lib/qiniu/misc.rb b/lib/qiniu/misc.rb
index 6359bfa..69509b6 100755
--- a/lib/qiniu/misc.rb
+++ b/lib/qiniu/misc.rb
@@ -1,5 +1,7 @@
 # -*- encoding: utf-8 -*-
 
+require 'qiniu/http'
+
 module Qiniu
     module Misc
       class << self