diff --git a/Gemfile b/Gemfile
index bb03c42..f15508d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'slim-rails'
 group :development do
   # this is only used for development.
   # if you want to use it, do:
-  # - create .enable_dev file in additionals directory
+  # - create .enable_dev file in messenger directory
   # - remove rubocop entries from REDMINE/Gemfile
   # - remove REDMINE/.rubocop* files
   if File.file? File.expand_path './.enable_dev', __dir__