diff --git a/ChangeLog b/ChangeLog
index 19915e009d..3edf4a55d5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Mar 25 11:08:37 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/uri/http.rb (URI::HTTP#initialize): [DOC] fix example,
+	  missing mandatory arguments.  [ruby-core:74540] [Bug #12215]
+
 Fri Mar 25 01:50:58 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* thread_pthread.c (reserve_stack): fix reserving position where
diff --git a/lib/uri/http.rb b/lib/uri/http.rb
index d43e9a28e0..81ae846fd9 100644
--- a/lib/uri/http.rb
+++ b/lib/uri/http.rb
@@ -63,6 +63,7 @@ module URI
       return super(tmp)
     end
 
+=begin
     #
     # == Description
     #
@@ -75,8 +76,8 @@ module URI
     #
     # Example:
     #
-    #     uri = URI::HTTP.new('http', nil, "www.example.com", nil, "/path",
-    #       "query", 'fragment')
+    #     uri = URI::HTTP.new("http", nil, "www.example.com", nil, nil,
+    #                         "/path", nil, "query", "fragment")
     #
     #
     # See also URI::Generic.new
@@ -84,6 +85,7 @@ module URI
     def initialize(*arg)
       super(*arg)
     end
+=end
 
     #
     # == Description