diff --git a/plugins/site_tour/lib/ext/person.rb b/plugins/site_tour/lib/ext/person.rb
index a6af042..93dc4bc 100644
--- a/plugins/site_tour/lib/ext/person.rb
+++ b/plugins/site_tour/lib/ext/person.rb
@@ -1,5 +1,5 @@
-class Person
+require_dependency 'person'
 
+class Person
   settings_items :site_tour_plugin_actions, :type => Array, :default => []
-
 end
--
libgit2 0.21.2