diff --git a/tracks/app/helpers/feed_helper.rb b/tracks/app/helpers/feed_helper.rb
index 6be2de4c..47c01b9b 100644
--- a/tracks/app/helpers/feed_helper.rb
+++ b/tracks/app/helpers/feed_helper.rb
@@ -62,6 +62,10 @@ module FeedHelper
     joined_notes = split_notes.join("\\n")
   end
   
+  def format_ical_uid(todo)
+    sprintf("%s%s%s%s", @request.protocol, @request.host, @request.port_string, url_for(:controller => 'todo', :action => 'show', :id => todo.id))
+  end
+  
   def rss_feed_link(options = {})
     image_tag = image_tag("feed-icon", :size => "16X16", :border => 0, :class => "rss-icon")
     linkoptions = {:controller => 'feed', :action => 'rss', :name => "#{@user.login}", :token => "#{@user.word}"}
diff --git a/tracks/app/views/feed/ical.rhtml b/tracks/app/views/feed/ical.rhtml
index f68001d2..1160e751 100644
--- a/tracks/app/views/feed/ical.rhtml
+++ b/tracks/app/views/feed/ical.rhtml
@@ -13,6 +13,7 @@ BEGIN:VTODO
 DTSTAMP:<%= @todo.created_at.strftime("%Y%m%dT%H%M%SZ") %>
 DTSTART;VALUE=DATE:<%= @todo.created_at.strftime("%Y%m%d") %>
 SUMMARY:<%= @todo.description %>
+UID:<%= format_ical_uid(@todo) %>
 <% if @todo.notes? -%>
 DESCRIPTION:<%= format_ical_notes(@todo.notes) %>
 <% end -%>