diff --git a/3rdparty b/3rdparty
index 08b820614ae..244f75dc8d4 160000
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 08b820614ae99477d7c9319630f400d22b20e2fd
+Subproject commit 244f75dc8d4552bb73a4aa93a1c6eeafdeb801d8
diff --git a/lib/private/connector/sabre/principal.php b/lib/private/connector/sabre/principal.php
index 5db9e505709..b4d8d3ec5fa 100644
--- a/lib/private/connector/sabre/principal.php
+++ b/lib/private/connector/sabre/principal.php
@@ -177,9 +177,10 @@ class Principal implements \Sabre\DAVACL\PrincipalBackend\BackendInterface {
 
 	/**
 	 * @param string $uri
+	 * @param string $principalPrefix
 	 * @return string
 	 */
-	function findByUri($uri) {
+	function findByUri($uri, $principalPrefix) {
 		return '';
 	}
 }