diff --git a/apps/api/app/controllers/api/images_controller.rb b/apps/api/app/controllers/api/images_controller.rb
index 3a1e71a..1fb26d0 100644
--- a/apps/api/app/controllers/api/images_controller.rb
+++ b/apps/api/app/controllers/api/images_controller.rb
@@ -1,6 +1,6 @@
 class Api::ImagesController < ApplicationController
   def show
-    image = ImageService.new.show(ImageShowInput.new(id: params[:id]))
+    image = ImageService.new.show(ImageShowInputDTO.new(id: params[:id]))
     send_file image.file_path, type: image.content_type, disposition: "inline"
   rescue ActiveRecord::RecordNotFound
     render plain: "Not Found", status: :not_found
diff --git a/apps/api/app/controllers/files_controller.rb b/apps/api/app/controllers/files_controller.rb
index e173f0f..e4edee1 100644
--- a/apps/api/app/controllers/files_controller.rb
+++ b/apps/api/app/controllers/files_controller.rb
@@ -2,7 +2,7 @@ class FilesController < ApplicationController
   skip_forgery_protection
 
   def show
-    result = FileService.new.show(FileShowInput.new(path: params[:path]))
+    result = FileService.new.show(FileShowInputDTO.new(path: params[:path]))
     case result.type
     when :redirect  then redirect_to result.url, status: :moved_permanently
     when :file
diff --git a/apps/api/app/controllers/update_controller.rb b/apps/api/app/controllers/update_controller.rb
index 6b50dd4..8ac7327 100644
--- a/apps/api/app/controllers/update_controller.rb
+++ b/apps/api/app/controllers/update_controller.rb
@@ -3,7 +3,7 @@ class UpdateController < ApiController
     return render plain: "Unauthorized", status: :unauthorized unless authorized?
     return render plain: "Version not provided", status: :bad_request if params[:version].blank?
 
-    input = UpdateInput.new(
+    input = UpdateInputDTO.new(
       platform: params[:platform],
       name:     params[:name],
       version:  params[:version]
diff --git a/apps/api/app/dtos/file_result.rb b/apps/api/app/dtos/file_result.rb
index f221f64..4862e68 100644
--- a/apps/api/app/dtos/file_result.rb
+++ b/apps/api/app/dtos/file_result.rb
@@ -1,4 +1,4 @@
-class FileResult
+class FileResultDTO
   attr_reader :type, :path, :url
 
   def initialize(type:, path: nil, url: nil)
diff --git a/apps/api/app/dtos/file_show_input.rb b/apps/api/app/dtos/file_show_input.rb
index ce15e6d..1f3e5e0 100644
--- a/apps/api/app/dtos/file_show_input.rb
+++ b/apps/api/app/dtos/file_show_input.rb
@@ -1 +1 @@
-FileShowInput = Struct.new(:path, keyword_init: true)
+FileShowInputDTO = Struct.new(:path, keyword_init: true)
diff --git a/apps/api/app/dtos/image_show_input.rb b/apps/api/app/dtos/image_show_input.rb
index d6ae0dc..40348ab 100644
--- a/apps/api/app/dtos/image_show_input.rb
+++ b/apps/api/app/dtos/image_show_input.rb
@@ -1 +1 @@
-ImageShowInput = Struct.new(:id, keyword_init: true)
+ImageShowInputDTO = Struct.new(:id, keyword_init: true)
diff --git a/apps/api/app/dtos/update_input.rb b/apps/api/app/dtos/update_input.rb
index 5af3beb..f32469b 100644
--- a/apps/api/app/dtos/update_input.rb
+++ b/apps/api/app/dtos/update_input.rb
@@ -1,4 +1,4 @@
-UpdateInput = Struct.new(:platform, :name, :version, keyword_init: true) do
+UpdateInputDTO = Struct.new(:platform, :name, :version, keyword_init: true) do
   def initialize(platform:, name:, version: nil)
     super
   end
diff --git a/apps/api/app/services/file_service.rb b/apps/api/app/services/file_service.rb
index 9144a11..67cf57d 100644
--- a/apps/api/app/services/file_service.rb
+++ b/apps/api/app/services/file_service.rb
@@ -6,14 +6,14 @@ class FileService
 
     if File.directory?(full_path)
       index_path = full_path.join("index.html")
-      return FileResult.not_found unless File.file?(index_path)
-      return FileResult.redirect("/file/#{input.path.to_s.chomp("/")}/index.html")
+      return FileResultDTO.not_found unless File.file?(index_path)
+      return FileResultDTO.redirect("/file/#{input.path.to_s.chomp("/")}/index.html")
     end
 
     if File.file?(full_path)
-      FileResult.file(full_path)
+      FileResultDTO.file(full_path)
     else
-      FileResult.not_found
+      FileResultDTO.not_found
     end
   end
 end