diff --git a/lib/cgi/cookie.rb b/lib/cgi/cookie.rb
index ae9ab58ede..6b0d89ca3b 100644
--- a/lib/cgi/cookie.rb
+++ b/lib/cgi/cookie.rb
@@ -159,7 +159,6 @@ class CGI
       raw_cookie.split(/;\s?/).each do |pairs|
         name, values = pairs.split('=',2)
         next unless name and values
-        name = CGI.unescape(name)
         values ||= ""
         values = values.split('&').collect{|v| CGI.unescape(v,@@accept_charset) }
         if cookies.has_key?(name)
diff --git a/test/cgi/test_cgi_cookie.rb b/test/cgi/test_cgi_cookie.rb
index 115a57e4a1..985cc0d7a1 100644
--- a/test/cgi/test_cgi_cookie.rb
+++ b/test/cgi/test_cgi_cookie.rb
@@ -101,6 +101,11 @@ class CGICookieTest < Test::Unit::TestCase
     end
   end
 
+  def test_cgi_cookie_parse_not_decode_name
+    cookie_str = "%66oo=baz;foo=bar"
+    cookies = CGI::Cookie.parse(cookie_str)
+    assert_equal({"%66oo" => ["baz"], "foo" => ["bar"]}, cookies)
+  end
 
   def test_cgi_cookie_arrayinterface
     cookie = CGI::Cookie.new('name1', 'a', 'b', 'c')