diff --git a/README.rdoc b/README.rdoc
index acb949d..1683a5a 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -17,8 +17,8 @@ http://www.oreillynet.com/ruby/blog/2008/02/structured_warnings_now.html
 
 structured_warnings works with all interpreters, it was tested with.
 
-* Ruby 1.8.5 and later (MRI)
-* Ruby 1.9.1 (YARV)
+* Ruby 1.8.5 and later
+* Ruby 1.9.1 and later
 * JRuby 1.x
 
 Please let me know, of any other compatibilities or file a bug for any