diff --git a/app/models/work_package/exports/formatters/derived_remaining_hours.rb b/app/models/work_package/exports/formatters/derived_remaining_hours.rb
deleted file mode 100644
index 853882e95cf..00000000000
--- a/app/models/work_package/exports/formatters/derived_remaining_hours.rb
+++ /dev/null
@@ -1,52 +0,0 @@
-#-- copyright
-# OpenProject is an open source project management software.
-# Copyright (C) 2012-2024 the OpenProject GmbH
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License version 3.
-#
-# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
-# Copyright (C) 2006-2013 Jean-Philippe Lang
-# Copyright (C) 2010-2013 the ChiliProject Team
-#
-# 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.
-#
-# See COPYRIGHT and LICENSE files for more details.
-#++
-module WorkPackage::Exports
-  module Formatters
-    class DerivedRemainingHours < ::Exports::Formatters::Default
-      def self.apply?(name, _export_format)
-        %i[derived_remaining_time derived_remaining_hours].include?(name.to_sym)
-      end
-
-      def format(work_package, **)
-        formatted_derived_hours(work_package)
-      end
-
-      private
-
-      def formatted_hours(value)
-        value.nil? ? nil : "#{value} #{I18n.t('export.units.hours')}"
-      end
-
-      def formatted_derived_hours(work_package)
-        if (derived_estimated_value = work_package.derived_estimated_hours)
-          formatted_hours(derived_estimated_value)
-        end
-      end
-    end
-  end
-end
diff --git a/config/initializers/export_formats.rb b/config/initializers/export_formats.rb
index 9d7603cef5e..ce0dc9e68db 100644
--- a/config/initializers/export_formats.rb
+++ b/config/initializers/export_formats.rb
@@ -7,7 +7,6 @@ Rails.application.configure do |application|
       single WorkPackage, WorkPackage::PDFExport::WorkPackageToPdf
 
       formatter WorkPackage, WorkPackage::Exports::Formatters::EstimatedHours
-      formatter WorkPackage, WorkPackage::Exports::Formatters::DerivedRemainingHours
       formatter WorkPackage, WorkPackage::Exports::Formatters::SpentUnits
       formatter WorkPackage, WorkPackage::Exports::Formatters::Hours
       formatter WorkPackage, WorkPackage::Exports::Formatters::Days