diff --git a/app/controllers/admin/locales_controller.rb b/app/controllers/admin/locales_controller.rb
index df822a29b..290e549b2 100644
--- a/app/controllers/admin/locales_controller.rb
+++ b/app/controllers/admin/locales_controller.rb
@@ -1,6 +1,6 @@
 class Admin::LocalesController < Admin::BaseController
   before_action :set_locales_settings
-  authorize_resource :locales_settings
+  authorize_resource instance_name: :locales_settings, class: "Setting::LocalesSettings"
 
   def show
   end
diff --git a/spec/controllers/admin/locales_controller_spec.rb b/spec/controllers/admin/locales_controller_spec.rb
new file mode 100644
index 000000000..c34928b06
--- /dev/null
+++ b/spec/controllers/admin/locales_controller_spec.rb
@@ -0,0 +1,17 @@
+require "rails_helper"
+
+describe Admin::LocalesController do
+  describe "PATCH update" do
+    it "checks permissions to update locales settings" do
+      user = create(:administrator).user
+      restricted_ability = user.ability.tap { |ability| ability.cannot :update, Setting::LocalesSettings }
+
+      sign_in user
+      allow(controller).to receive(:current_ability).and_return(restricted_ability)
+      patch :update, params: { setting_locales_settings: { default: :es, enabled: [:en, :fr] }}
+
+      expect(response).to redirect_to "/"
+      expect(Setting.default_locale).to eq :en
+    end
+  end
+end