diff --git app/controllers/attachments_controller.rb app/controllers/attachments_controller.rb
index d81b3d9..8c6b448 100644
--- app/controllers/attachments_controller.rb
+++ app/controllers/attachments_controller.rb
@@ -22,7 +22,7 @@ class AttachmentsController < ApplicationController
   before_filter :delete_authorize, :only => :destroy
   before_filter :authorize_global, :only => :upload
 
-  accept_api_auth :show, :download, :thumbnail, :upload
+  accept_api_auth :show, :download, :thumbnail, :upload, :destroy
 
   def show
     respond_to do |format|
@@ -130,6 +130,7 @@ class AttachmentsController < ApplicationController
     respond_to do |format|
       format.html { redirect_to_referer_or project_path(@project) }
       format.js
+      format.api { render_api_ok }
     end
   end
 
diff --git test/integration/api_test/attachments_test.rb test/integration/api_test/attachments_test.rb
index 4ec4c84..640a782 100644
--- test/integration/api_test/attachments_test.rb
+++ test/integration/api_test/attachments_test.rb
@@ -81,6 +81,24 @@ class Redmine::ApiTest::AttachmentsTest < Redmine::ApiTest::Base
     assert_response :success
   end
 
+  test "Destroy /attachments/:id.xml should return ok and deleted Attachment" do
+    assert_difference 'Attachment.count', -1 do
+      delete '/attachments/7.xml', {}, credentials('jsmith')
+      assert_response :ok
+      assert_equal '', response.body
+    end
+    assert_nil Attachment.find_by_id(7)
+  end
+
+  test "Destroy /attachments/:id.json should return ok and deleted Attachment" do
+    assert_difference 'Attachment.count', -1 do
+      delete '/attachments/7.json', {}, credentials('jsmith')
+      assert_response :ok
+      assert_equal '', response.body
+    end
+    assert_nil Attachment.find_by_id(7)
+  end
+
   test "POST /uploads.xml should return the token" do
     set_tmp_attachments_directory
     assert_difference 'Attachment.count' do