--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,6 +1,6 @@
 require 'test/unit'
 begin
-require File.dirname(__FILE__) + '/../msgpack'
+require 'msgpack'
 rescue LoadError
 require File.dirname(__FILE__) + '/../lib/msgpack'
 end
