diff --git a/lib/redmine_dmsf.rb b/lib/redmine_dmsf.rb
index ef1b2f72..88843e37 100644
--- a/lib/redmine_dmsf.rb
+++ b/lib/redmine_dmsf.rb
@@ -39,7 +39,8 @@ require File.dirname(__FILE__) + '/redmine_dmsf/patches/issue_patch'
 require File.dirname(__FILE__) + '/redmine_dmsf/patches/role_patch'
 require File.dirname(__FILE__) + '/redmine_dmsf/patches/queries_controller_patch'
 
-if RedmineDmsf::Plugin.present?(:redmine_questions) && !Redmine::Plugin.installed?(:easy_extensions)
+if (RedmineDmsf::Plugin.present?(:redmine_questions) || Redmine::Plugin.installed?(:redmine_contacts) ||
+  Redmine::Plugin.installed?(:redmine_checklist)) &&  !Redmine::Plugin.installed?(:easy_extensions)
   require File.dirname(__FILE__) + '/redmine_dmsf/patches/notifiable_ru_patch'
 else
   require File.dirname(__FILE__) + '/redmine_dmsf/patches/notifiable_patch'