diff --git a/ChangeLog b/ChangeLog
index a7cae82460..a8708815b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Apr 22 12:04:15 2011  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* array.c (rb_ary_sort_bang): fix rdoc.
+	  patched by burningTyger. https://github.com/ruby/ruby/pull/11
+
 Fri Apr 22 11:49:49 2011  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* lib/xmlrpc/create.rb (XMLRPC::Create#conv2value):
diff --git a/array.c b/array.c
index bdeb768118..9664626c7b 100644
--- a/array.c
+++ b/array.c
@@ -2068,8 +2068,8 @@ sort_2(const void *ap, const void *bp, void *dummy)
  *  <code>Enumerable#sort_by</code>.
  *
  *     a = [ "d", "a", "e", "c", "b" ]
- *     a.sort                    #=> ["a", "b", "c", "d", "e"]
- *     a.sort {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
+ *     a.sort!                    #=> ["a", "b", "c", "d", "e"]
+ *     a.sort! {|x,y| y <=> x }   #=> ["e", "d", "c", "b", "a"]
  */
 
 VALUE