diff --git a/ChangeLog b/ChangeLog
index 26463851aa..af89d2e169 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Tue Oct 16 09:40:04 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* test/ruby/test_regexp.rb
+	  (TextRegexp#test_raw_hyphen_and_tk_char_type_after_range): use
+	  Regexp.new instead of literal to ignore a parser warning.
+
 Tue Oct 16 09:30:30 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/ruby/test_regexp.rb
diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 781e8e11c5..0825e945fd 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -914,6 +914,7 @@ class TestRegexp < Test::Unit::TestCase
 
   def test_raw_hyphen_and_tk_char_type_after_range
     bug6853 = '[ruby-core:47115]'
-    check(/[0-1-\s]/, [' ', '-'], ['2', 'a'], bug6853)
+    # use Regexp.new instead of literal to ignore a parser warning.
+    check(Regexp.new('[0-1-\\s]'), [' ', '-'], ['2', 'a'], bug6853)
   end
 end