diff --git a/sample/sample_httpi.rb b/sample/sample_httpi.rb
index 7a875f8..a588c61 100644
--- a/sample/sample_httpi.rb
+++ b/sample/sample_httpi.rb
@@ -2,9 +2,6 @@
 
 require File.expand_path('sample_setting', File.dirname(__FILE__))
 
-HTTPI.adapter = :curb
-p HTTPI.get(HTTPI::Request.new(@url)).body.size
-HTTPI.adapter = :httpclient
-p HTTPI.get(HTTPI::Request.new(@url)).body.size
-HTTPI.adapter = :net_http
-p HTTPI.get(HTTPI::Request.new(@url)).body.size
+p HTTPI.get(@url, :curb).body.size
+p HTTPI.get(@url, :httpclient).body.size
+p HTTPI.get(@url, :net_http).body.size