diff --git a/init.rb b/init.rb
index bd760a7..f44df79 100644
--- a/init.rb
+++ b/init.rb
@@ -1,9 +1,7 @@
 require 'redmine'
-require 'redmine_per_project_formatting'
+require File.expand_path('../lib/redmine_per_project_formatting', __FILE__)
 
-Rails.application.config.to_prepare do
-  RedminePerProjectFormatting.apply_patch
-end
+RedminePerProjectFormatting.apply_patch
 
 Redmine::Plugin.register :redmine_per_project_formatting do
   name 'Redmine per project formatting plugin'
diff --git a/lib/redmine_per_project_formatting.rb b/lib/redmine_per_project_formatting.rb
index e2dfdc8..efb49ba 100644
--- a/lib/redmine_per_project_formatting.rb
+++ b/lib/redmine_per_project_formatting.rb
@@ -1,7 +1,7 @@
-require 'redmine_per_project_formatting/project_listener'
-require 'redmine_per_project_formatting/application_controller_patch'
-require 'redmine_per_project_formatting/project_patch'
-require 'redmine_per_project_formatting/setting_patch'
+require File.expand_path('../redmine_per_project_formatting/project_listener', __FILE__)
+require File.expand_path('../redmine_per_project_formatting/application_controller_patch', __FILE__)
+require File.expand_path('../redmine_per_project_formatting/project_patch', __FILE__)
+require File.expand_path('../redmine_per_project_formatting/setting_patch', __FILE__)
 
 module RedminePerProjectFormatting
   def self.apply_patch