diff --git a/app/models/application_record.rb b/app/models/application_record.rb
deleted file mode 100644
index 135a3085..00000000
--- a/app/models/application_record.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-# frozen_string_literal: true
-
-# Redmine plugin for Document Management System "Features"
-#
-# Karel Pičman <karel.picman@kontron.com>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-
-# Application record
-class ApplicationRecord < ActiveRecord::Base
-  self.abstract_class = true
-end