diff --git a/dav/dav.php b/dav/dav.php
index 05916d01..40040dfe 100644
--- a/dav/dav.php
+++ b/dav/dav.php
@@ -8,5 +8,5 @@
 
 $_v = explode(".", phpversion());
 if ($_v[0] > 5 || ($_v[0] == 5 && $_v[1] >= 3)) {
-	require(__DIR__ . "/main.php");
+	require(__DIR__ . "/friendica/main.php");
 }
\ No newline at end of file
diff --git a/dav/FriendicaACLPlugin.inc.php b/dav/friendica/FriendicaACLPlugin.inc.php
similarity index 100%
rename from dav/FriendicaACLPlugin.inc.php
rename to dav/friendica/FriendicaACLPlugin.inc.php
diff --git a/dav/calendar.friendica.fnk.php b/dav/friendica/calendar.friendica.fnk.php
similarity index 100%
rename from dav/calendar.friendica.fnk.php
rename to dav/friendica/calendar.friendica.fnk.php
diff --git a/dav/database-init.inc.php b/dav/friendica/database-init.inc.php
similarity index 100%
rename from dav/database-init.inc.php
rename to dav/friendica/database-init.inc.php
diff --git a/dav/dav_caldav_backend_virtual_friendica.inc.php b/dav/friendica/dav_caldav_backend_virtual_friendica.inc.php
similarity index 100%
rename from dav/dav_caldav_backend_virtual_friendica.inc.php
rename to dav/friendica/dav_caldav_backend_virtual_friendica.inc.php
diff --git a/dav/dav_carddav_backend_virtual_friendica.inc.php b/dav/friendica/dav_carddav_backend_virtual_friendica.inc.php
similarity index 100%
rename from dav/dav_carddav_backend_virtual_friendica.inc.php
rename to dav/friendica/dav_carddav_backend_virtual_friendica.inc.php
diff --git a/dav/dav_friendica_auth.inc.php b/dav/friendica/dav_friendica_auth.inc.php
similarity index 100%
rename from dav/dav_friendica_auth.inc.php
rename to dav/friendica/dav_friendica_auth.inc.php
diff --git a/dav/dav_friendica_principal.inc.php b/dav/friendica/dav_friendica_principal.inc.php
similarity index 100%
rename from dav/dav_friendica_principal.inc.php
rename to dav/friendica/dav_friendica_principal.inc.php
diff --git a/dav/layout.fnk.php b/dav/friendica/layout.fnk.php
similarity index 99%
rename from dav/layout.fnk.php
rename to dav/friendica/layout.fnk.php
index 597e773d..5b65ec24 100644
--- a/dav/layout.fnk.php
+++ b/dav/friendica/layout.fnk.php
@@ -17,7 +17,7 @@ function wdcal_addRequiredHeaders()
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/timepicker/timePicker.css' . '" media="all" />' . "\r\n";
 	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/timepicker/jquery.timePicker.min.js"></script>' . "\r\n";
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/wdcal.css' . '" media="all" />' . "\r\n";
+	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/friendica/wdcal.css' . '" media="all" />' . "\r\n";
 	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal.js"></script>' . "\r\n";
 
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/wdcal/css/calendar.css' . '" media="all" />' . "\r\n";
diff --git a/dav/main.php b/dav/friendica/main.php
similarity index 89%
rename from dav/main.php
rename to dav/friendica/main.php
index c36d0084..602bda6d 100644
--- a/dav/main.php
+++ b/dav/friendica/main.php
@@ -26,27 +26,27 @@ function dav_module()
 
 function dav_include_files()
 {
-	require_once (__DIR__ . "/SabreDAV/lib/Sabre/autoload.php");
+	require_once (__DIR__ . "/../SabreDAV/lib/Sabre/autoload.php");
 
-	require_once (__DIR__ . "/common/calendar.fnk.php");
-	require_once (__DIR__ . "/common/calendar_rendering.fnk.php");
+	require_once (__DIR__ . "/../common/calendar.fnk.php");
+	require_once (__DIR__ . "/../common/calendar_rendering.fnk.php");
 
-	require_once (__DIR__ . "/common/dav_caldav_backend_common.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_backend_private.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_backend_virtual.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_root.inc.php");
-	require_once (__DIR__ . "/common/dav_user_calendars.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_calendar_virtual.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_calendar_private.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_backend_common.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_backend_private.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_backend_virtual.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_root.inc.php");
+	require_once (__DIR__ . "/../common/dav_user_calendars.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_calendar_virtual.inc.php");
+	require_once (__DIR__ . "/../common/dav_caldav_calendar_private.inc.php");
 
-	require_once (__DIR__ . "/common/dav_carddav_root.inc.php");
-	require_once (__DIR__ . "/common/dav_carddav_backend_common.inc.php");
-	require_once (__DIR__ . "/common/dav_carddav_backend_virtual.inc.php");
-	require_once (__DIR__ . "/common/dav_carddav_backend_private.inc.php");
-	require_once (__DIR__ . "/common/dav_user_addressbooks.inc.php");
+	require_once (__DIR__ . "/../common/dav_carddav_root.inc.php");
+	require_once (__DIR__ . "/../common/dav_carddav_backend_common.inc.php");
+	require_once (__DIR__ . "/../common/dav_carddav_backend_virtual.inc.php");
+	require_once (__DIR__ . "/../common/dav_carddav_backend_private.inc.php");
+	require_once (__DIR__ . "/../common/dav_user_addressbooks.inc.php");
 
-	require_once (__DIR__ . "/common/wdcal_configuration.php");
-	require_once (__DIR__ . "/common/wdcal_backend.inc.php");
+	require_once (__DIR__ . "/../common/wdcal_configuration.php");
+	require_once (__DIR__ . "/../common/wdcal_backend.inc.php");
 
 	require_once (__DIR__ . "/dav_friendica_principal.inc.php");
 	require_once (__DIR__ . "/dav_friendica_auth.inc.php");
@@ -54,7 +54,7 @@ function dav_include_files()
 	require_once (__DIR__ . "/dav_caldav_backend_virtual_friendica.inc.php");
 	require_once (__DIR__ . "/FriendicaACLPlugin.inc.php");
 
-	require_once (__DIR__ . "/common/wdcal_edit.inc.php");
+	require_once (__DIR__ . "/../common/wdcal_edit.inc.php");
 	require_once (__DIR__ . "/calendar.friendica.fnk.php");
 	require_once (__DIR__ . "/layout.fnk.php");
 }
diff --git a/dav/wdcal.css b/dav/friendica/wdcal.css
similarity index 100%
rename from dav/wdcal.css
rename to dav/friendica/wdcal.css