diff --git a/app/controllers/admin/base_controller.rb b/app/controllers/admin/base_controller.rb
index 67c01ad..64c07bf 100644
--- a/app/controllers/admin/base_controller.rb
+++ b/app/controllers/admin/base_controller.rb
@@ -5,7 +5,7 @@ class Admin::BaseController < ApplicationController
 
   def undo_link(item)
     view_context.link_to('Undo this change',
-                         admin_revert_version_path(id: item.version.last),
+                         admin_revert_version_path(id: item.versions.last),
                          method: :post)
   end
 end