diff --git a/app/controllers/server/application_controller.rb b/app/controllers/server/application_controller.rb
index b6a2a5b819a02011c3538b5ef02877b57e51ed6c..3966163c2dbd6ae8361e2caf16691c4fa8f035dc 100644
--- a/app/controllers/server/application_controller.rb
+++ b/app/controllers/server/application_controller.rb
@@ -5,6 +5,10 @@ class Server::ApplicationController < ApplicationController
 
   protected
 
+  def current_admin_theme
+    'pure'
+  end
+
   def breadcrumb
     add_breadcrumb t('admin.dashboard'), :server_root_path
   end