diff --git a/dav/README.md b/dav/README.md
index a8243972..7c2abdb8 100644
--- a/dav/README.md
+++ b/dav/README.md
@@ -1,4 +1,6 @@
-Calendar with CalDAV Support
+# Calendar with CalDAV Support
+
+**THIS ADDON IS UNSUPPORTED**
 
 This is a rewrite of the calendar system used by the german social network [Animexx](http://www.animexx.de/).
 It's still in a very early stage, so expect major bugs. Please feel free to report any of them, by mail (cato@animexx.de) or Friendica: http://friendica.hoessl.eu/profile/cato
@@ -16,28 +18,28 @@ At the moment, the calendar system supports the following features:
 - The events of a calendar can be exported as ICS file. ICS files can be imported into a calendar
 
 
-Internationalization:
+## Internationalization:
 - At the moment, settings for the US and the german systems are selectable (regarding the date format and the first day of the week). More will be added on request.
 - The basic design of the system is aware of timezones; however this is not reflected in the UI yet. It currently assumes that the timezone set in the friendica-installation matches the user's local time and matches the local time set in the user's operating system.
 
-CalDAV device compatibility:
+## CalDAV device compatibility:
 - iOS (iPhone/iPodTouch) works
 - Thunderbird Lightning works
 - Android:
   - aCal (http://andrew.mcmillan.net.nz/projects/aCal) works, available in F-Droid and Google Play
   - CalDAV-Sync (http://dmfs.org/caldav/) works, non-free
 
-Installation
+## Installation
 After activating, serveral tables in the database have to be created. The admin-interface of the plugin will try to do this automatically.
 In case of errors, the SQL-statement to create the tables manually are shown in the admin-interface.
 
 
-Functuality missing: (a.k.a. "Roadmap")
+## Functuality missing: (a.k.a. "Roadmap")
 - Sharing events; all events are private at the moment, therefore this system is not a complete replacement for the friendica-native events
 - Attendees / Collaboration
 
 
-Used libraries
+## Used libraries
 
 SabreDAV
 http://code.google.com/p/sabredav/
diff --git a/dav/dav.php b/dav/dav.php
index f4d08f02..f9125f9e 100644
--- a/dav/dav.php
+++ b/dav/dav.php
@@ -4,9 +4,10 @@
  * Description: A web-based calendar system with CalDAV-support. Also brings your Friendica-Contacts to your CardDAV-capable mobile phone. Requires PHP >= 5.3.
  * Version: 0.3.0
  * Author: Tobias Hößl <https://github.com/CatoTH/>
+ * Status: Unsupported
  */
 
 $_v = explode(".", phpversion());
 if ($_v[0] > 5 || ($_v[0] == 5 && $_v[1] >= 3)) {
 	require(__DIR__ . "/friendica/main.php");
-}
\ No newline at end of file
+}