diff --git a/README.md b/README.md
index fb2aedf..f3e7209 100644
--- a/README.md
+++ b/README.md
@@ -20,23 +20,6 @@ rake redmine:plugins:migrate RAILS_ENV=production
 And restart your application server.
 
 
-## Compatibility
-
-This current version on github is compatible with Redmine 2.1 - 4.2.
-
-It has been imported from lp:redminelocalavatars
-incorporating the patch for 2.1 from chrisy at [https://bugs.launchpad.net/redminelocalavatars/+bug/1069808/comments/4](https://bugs.launchpad.net/redminelocalavatars/+bug/1069808/comments/4)
-
-### Incompatibilities
-
-As reported in [issue #12](https://github.com/ncoders/redmine_local_avatars/issues/12), the plugin "mega_calendar" ist not compatible with this plugin due to an issue with the provided users_controller_path.rb file.
-
-### Old version on launchpad
-Tested on Redmine trunk r4388	(version 1.0.3).  Should be compatible with
-all Redmine versions 1.0.x.
-
-At the moment the plugin doesn't work when running in development mode.
-
 ## Authors
 
 * A.Chaika wrote the original version:
diff --git a/init.rb b/init.rb
index 4585919..295d2b4 100755
--- a/init.rb
+++ b/init.rb
@@ -24,23 +24,10 @@
   author_url 'https://github.com/ncoders/redmine_local_avatars'
   description 'This plugin lets users upload avatars directly into Redmine'
   version '1.0.7'
+  requires_redmine version_or_higher: '4.1'
 end
 
 receiver = Object.const_defined?('ActiveSupport::Reloader') ?  ActiveSupport::Reloader : ActionDispatch::Callbacks
-#receiver.to_prepare  do
-#  require_dependency 'project'
-#  require_dependency 'principal'
-#  require_dependency 'user'
-
-#  helper_klass = ApplicationHelper.method_defined?(:avatar) ? ApplicationHelper : AvatarsHelper
-
-#  AccountController.send(:include,  LocalAvatarsPlugin::AccountControllerPatch)
-#  helper_klass.send(:include,  LocalAvatarsPlugin::ApplicationAvatarPatch)
-#  MyController.send(:include,  LocalAvatarsPlugin::MyControllerPatch)
-#  User.send(:include,  LocalAvatarsPlugin::UsersAvatarPatch)
-#  UsersController.send(:include,  LocalAvatarsPlugin::UsersControllerPatch)
-#  UsersHelper.send(:include,  LocalAvatarsPlugin::UsersHelperPatch)
-#end
 
 require File.expand_path('../lib/local_avatars', __FILE__)