diff --git a/lib/thor/parser/options.rb b/lib/thor/parser/options.rb
index c6829c0bb..81b671df3 100644
--- a/lib/thor/parser/options.rb
+++ b/lib/thor/parser/options.rb
@@ -1,7 +1,4 @@
 class Thor
-  # This is a modified version of Daniel Berger's Getopt::Long class, licensed
-  # under Ruby's license.
-  #
   class Options < Arguments #:nodoc:
     LONG_RE     = /^(--\w+(?:-\w+)*)$/
     SHORT_RE    = /^(-[a-z])$/i