diff --git a/ChangeLog b/ChangeLog
index c07fac347b..a04f9e67a8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue May 21 21:48:44 2013  Kouhei Sutou  <kou@cozmixng.org>
+
+	* test/ruby/test_dir_m17n.rb (TestDir_M17N#test_entries_compose):
+	  Use #each instead of #map just for iteration.
+
 Tue May 21 19:57:22 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* ext/digest/lib/digest.rb (Digest::Class.file): Take optional
diff --git a/test/ruby/test_dir_m17n.rb b/test/ruby/test_dir_m17n.rb
index 0816873647..ce70971816 100644
--- a/test/ruby/test_dir_m17n.rb
+++ b/test/ruby/test_dir_m17n.rb
@@ -323,7 +323,7 @@ class TestDir_M17N < Test::Unit::TestCase
       else
         enc = Encoding.find("filesystem")
         enc = Encoding::ASCII_8BIT if enc == Encoding::US_ASCII
-        orig.map {|o| o.force_encoding(enc) }
+        orig.each {|o| o.force_encoding(enc) }
       end
       ents = Dir.entries(".", opts).reject {|n| /\A\./ =~ n}
       ents.sort!