2 files changed, 13 insertions, 2 deletions
diff --git a/lib/cgi/core.rb b/lib/cgi/core.rb
index fd9c41aa31..5895cf8541 100644
--- a/lib/cgi/core.rb
+++ b/lib/cgi/core.rb
@@ -4,6 +4,13 @@
 # generating HTTP responses.
 #++
 class CGI
+  unless const_defined?(:Util)
+    module Util
+      @@accept_charset = "UTF-8" # :nodoc:
+    end
+    include Util
+    extend Util
+  end
 
   $CGI_ENV = ENV    # for FCGI support
 
@@ -734,7 +741,7 @@ class CGI
   #
   #   CGI.accept_charset = "EUC-JP"
   #
-  @@accept_charset="UTF-8"
+  @@accept_charset="UTF-8" if false # needed for rdoc?
 
   # Return the accept character set for all new CGI instances.
   def self.accept_charset
diff --git a/lib/cgi/util.rb b/lib/cgi/util.rb
index d765fd73e6..18eaf44375 100644
--- a/lib/cgi/util.rb
+++ b/lib/cgi/util.rb
@@ -1,5 +1,9 @@
 # frozen_string_literal: true
-class CGI; module Util; end; extend Util; end
+class CGI
+  module Util; end
+  include Util
+  extend Util
+end
 module CGI::Util
   @@accept_charset="UTF-8" unless defined?(@@accept_charset)
   # URL-encode a string.