diff --git a/lib/backend/abstractbackend.php b/lib/backend/abstractbackend.php
index aa1b78ff..3085806b 100644
--- a/lib/backend/abstractbackend.php
+++ b/lib/backend/abstractbackend.php
@@ -434,8 +434,7 @@ abstract class AbstractBackend {
 	 */
 	public function getPreferences($addressBookId) {
 
-		$key = $this->combinedKey($addressBookId);
-		$key = 'prefs_' . $key;
+		$key = 'prefs_' . $this->combinedKey($addressBookId);
 
 		$data = \OCP\Config::getUserValue($this->userid, 'contacts', $key, false);
 		return $data ? json_decode($data, true) : array();
@@ -448,8 +447,7 @@ abstract class AbstractBackend {
 	 * @return boolean
 	 */
 	public function setPreferences($addressbookid, array $params) {
-		$key = $this->combinedKey($addressbookid);
-		$key = 'prefs_' . $key;
+		$key = 'prefs_' . $this->combinedKey($addressbookid);
 
 		$data = json_encode($params);
 		return $data
diff --git a/lib/controller/addressbookcontroller.php b/lib/controller/addressbookcontroller.php
index c854a73c..757c74ee 100644
--- a/lib/controller/addressbookcontroller.php
+++ b/lib/controller/addressbookcontroller.php
@@ -359,34 +359,5 @@ class AddressBookController extends Controller {
 		return $response->setParams($serialized);
 	}
 
-	/**
-	 * @NoAdminRequired
-	 * @NoCSRFRequired
-	 */
-	public function getLdapConnectors() {
-		$params = $this->request->urlParams;
-		//$targetInfo = $this->request->post['target'];
-
-		$response = new JSONResponse();
-		$prefix = "backend_ldap_";
-		$suffix = "_connector.xml";
-		$path = __DIR__ . "/../../formats/";
-		$files = scandir($path);
-		$formats = array();
-		foreach ($files as $file) {
-			if (!strncmp($file, $prefix, strlen($prefix)) && substr($file, - strlen($suffix)) === $suffix) {
-				if (file_exists($path.$file)) {
-					$format = simplexml_load_file ( $path.$file );
-					if ($format) {
-						if (isset($format['name'])) {
-							$formatId = substr($file, strlen($prefix), - strlen($suffix));
-							$formats[$formatId] = array('id' => $formatId, 'name' => (string)$format['name'], 'xml' => $format->asXML());
-						}
-					}
-				}
-			}
-		}
-		return $response->setData($formats);
-	}
 }
 
diff --git a/lib/controller/backendcontroller.php b/lib/controller/backendcontroller.php
index 8d268957..40b77dbf 100644
--- a/lib/controller/backendcontroller.php
+++ b/lib/controller/backendcontroller.php
@@ -25,9 +25,6 @@ class BackendController extends Controller {
 	 * @NoCSRFRequired
 	 */
 	public function getLdapConnectors() {
-		$params = $this->request->urlParams;
-		//$targetInfo = $this->request->post['target'];
-
 		$response = new JSONResponse();
 		$prefix = "backend_ldap_";
 		$suffix = "_connector.xml";