diff --git a/lib/simple_oauth.rb b/lib/simple_oauth.rb
index e4b2a7e..4789ccb 100644
--- a/lib/simple_oauth.rb
+++ b/lib/simple_oauth.rb
@@ -2,5 +2,4 @@ require 'base64'
 require 'cgi'
 require 'openssl'
 require 'uri'
-require 'simple_oauth/core_ext/object'
 require 'simple_oauth/header'
diff --git a/lib/simple_oauth/core_ext/object.rb b/lib/simple_oauth/core_ext/object.rb
deleted file mode 100644
index c4b4e17..0000000
--- a/lib/simple_oauth/core_ext/object.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-major, minor, patch = RUBY_VERSION.split('.')
-
-if major.to_i == 1 && minor.to_i == 8 && patch.to_i <= 6
-  class Object
-    def tap
-      yield self
-      self
-    end
-  end
-end
diff --git a/lib/simple_oauth/header.rb b/lib/simple_oauth/header.rb
index 97bb7de..6b34dad 100644
--- a/lib/simple_oauth/header.rb
+++ b/lib/simple_oauth/header.rb
@@ -30,17 +30,18 @@ module SimpleOAuth
 
     def initialize(method, url, params, oauth = {})
       @method = method.to_s.upcase
-      @uri = URI.parse(url.to_s).tap do |uri|
-        uri.scheme = uri.scheme.downcase
-        uri.normalize!
-        uri.fragment = nil
-      end
+      @uri = URI.parse(url.to_s)
+      @uri.scheme = @uri.scheme.downcase
+      @uri.normalize!
+      @uri.fragment = nil
       @params = params
       @options = oauth.is_a?(Hash) ? self.class.default_options.merge(oauth) : self.class.parse(oauth)
     end
 
     def url
-      @uri.dup.tap{|u| u.query = nil }.to_s
+      uri = @uri.dup
+      uri.query = nil
+      uri.to_s
     end
 
     def to_s