diff -r d78b06240b73 -r b56a4c5afa35 app/views/activities/_busy.html.erb
--- a/app/views/activities/_busy.html.erb
+++ b/app/views/activities/_busy.html.erb
@@ -1,6 +1,6 @@
 <% events = @events_by_day %>
 <% if (events.nil?) 
-     activity = Redmine::Activity::Fetcher.new(User.current)
+     activity = Redmine::Activity::Fetcher.new(User.anonymous)
      events = activity.events(Date.today - 14, Date.today + 1)
    end
 %>