diff --git a/apps/dav/lib/CardDAV/CardDavBackend.php b/apps/dav/lib/CardDAV/CardDavBackend.php
index 397a77c1d1b5531df95fd38650e34aeef13466a9..f7963c0fa2b9c2ab4d572e0b7aaccff90f064cf7 100644
--- a/apps/dav/lib/CardDAV/CardDavBackend.php
+++ b/apps/dav/lib/CardDAV/CardDavBackend.php
@@ -213,7 +213,6 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 	}
 
 	public function getUsersOwnAddressBooks($principalUri) {
-		$principalUriOriginal = $principalUri;
 		$principalUri = $this->convertPrincipal($principalUri, true);
 		$query = $this->db->getQueryBuilder();
 		$query->select(['id', 'uri', 'displayname', 'principaluri', 'description', 'synctoken'])
diff --git a/lib/private/legacy/defaults.php b/lib/private/legacy/defaults.php
index 10dd935d26bfd7937822cc52262bbd28f64a8b62..72e25e5e647e186b81a3d37bc5fc781ea1082266 100644
--- a/lib/private/legacy/defaults.php
+++ b/lib/private/legacy/defaults.php
@@ -48,7 +48,6 @@ class OC_Defaults {
 	private $defaultLogoClaim;
 	private $defaultColorPrimary;
 	private $defaultLogoUrl;
-	private $defaultCacheBuster;
 
 	function __construct() {
 		$this->l = \OC::$server->getL10N('lib');