diff --git a/app/views/admin/application/static/_permalink.html.erb b/app/views/admin/application/static/_permalink.html.erb
index 0566d251fe5b99069ba4d6a4540fd2c030a97a56..99409ca322c6eebfc6256375bf176c6bbe50c172 100644
--- a/app/views/admin/application/static/_permalink.html.erb
+++ b/app/views/admin/application/static/_permalink.html.erb
@@ -1,5 +1,6 @@
 url: "<%= @about.current_permalink_in_website(@website)&.path %>"
 <% if @about.respond_to?(:slug) && @about.slug.present? %>
+<% forced_slug ||= nil %>
 slug: "<%= forced_slug || @about.slug %>"
 <% end %>
 <%