diff --git a/app/views/admin/settings/registrations/show.html.erb b/app/views/admin/settings/registrations/show.html.erb
index b54b1b2..e330d69 100644
--- a/app/views/admin/settings/registrations/show.html.erb
+++ b/app/views/admin/settings/registrations/show.html.erb
@@ -30,7 +30,8 @@
             <% Setting.available_services.each do |option| %>
               <div class="md:inline-block">
                 <%= f.check_box :default_services,
-                  { multiple: true, checked: Setting.default_services.include?(option) },
+                  { multiple: true, checked: Setting.default_services.include?(option),
+                    class: "h-4 w-4 rounded border-gray-300 text-blue-600 focus:ring-blue-600 mr-0.5" },
                   option, nil %>
                 <%= f.label "default_services_#{option.parameterize}", service_human_name(option) %>
               </div>