diff --git a/ChangeLog b/ChangeLog
index 31cac1cb53a185..ee6e2e6eebea1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Oct 27 17:32:23 2012  Nathan Broadbent <nathan.f77@gmail.com>
+
+	* lib/set.rb: Added #join method as a shortcut for to_a.join
+
 Fri Oct 12 18:18:03 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* file.c (rb_get_path_check): path name must not contain NUL bytes.
diff --git a/lib/set.rb b/lib/set.rb
index 87a941e56511e1..f71727d5e153d9 100755
--- a/lib/set.rb
+++ b/lib/set.rb
@@ -152,6 +152,10 @@ def to_a
     @hash.keys
   end
 
+  def join(sep = nil)
+    to_a.join(sep)
+  end
+
   def flatten_merge(set, seen = Set.new) # :nodoc:
     set.each { |e|
       if e.is_a?(Set)