diff --git a/lib/mruby/source.rb b/lib/mruby/source.rb
--- a/lib/mruby/source.rb
+++ b/lib/mruby/source.rb
module MRuby
module Source
- # MRuby's source root directory
+ # mruby's source root directory
ROOT = Pathname.new(File.expand_path('../../../',__FILE__))
# Reads a constant defined at version.h