diff --git a/apps/user_ldap/lib/access.php b/apps/user_ldap/lib/access.php
index 32472c13b0..dd8ffe14bc 100644
--- a/apps/user_ldap/lib/access.php
+++ b/apps/user_ldap/lib/access.php
@@ -691,8 +691,9 @@ class Access extends LDAPUtility implements user\IUserTools {
 	 * @param array $ldapRecords
 	 */
 	public function batchApplyUserAttributes(array $ldapRecords){
+		$displayNameAttribute = strtolower($this->connection->ldapUserDisplayName);
 		foreach($ldapRecords as $userRecord) {
-			$ocName  = $this->dn2ocname($userRecord['dn'][0], $userRecord[$this->connection->ldapUserDisplayName]);
+			$ocName  = $this->dn2ocname($userRecord['dn'][0], $userRecord[$displayNameAttribute]);
 			$this->cacheUserExists($ocName);
 			$user = $this->userManager->get($ocName);
 			$user->processAttributes($userRecord);
diff --git a/apps/user_ldap/tests/access.php b/apps/user_ldap/tests/access.php
index cb6dbf0cd5..25e871d9b3 100644
--- a/apps/user_ldap/tests/access.php
+++ b/apps/user_ldap/tests/access.php
@@ -230,24 +230,34 @@ class Test_Access extends \Test\TestCase {
 		$mapperMock = $this->getMockBuilder('\OCA\User_LDAP\Mapping\UserMapping')
 			->disableOriginalConstructor()
 			->getMock();
+
+		$mapperMock->expects($this->any())
+			->method('getNameByDN')
+			->will($this->returnValue('a_username'));
+
 		$userMock = $this->getMockBuilder('\OCA\user_ldap\lib\user\User')
 			->disableOriginalConstructor()
 			->getMock();
 
+		$access->connection->expects($this->any())
+			->method('__get')
+			->will($this->returnValue('displayName'));
+
 		$access->setUserMapper($mapperMock);
 
+		$displayNameAttribute = strtolower($access->connection->ldapUserDisplayName);
 		$data = array(
 			array(
 				'dn' => 'foobar',
-				$con->ldapUserDisplayName => 'barfoo'
+				$displayNameAttribute => 'barfoo'
 			),
 			array(
 				'dn' => 'foo',
-				$con->ldapUserDisplayName => 'bar'
+				$displayNameAttribute => 'bar'
 			),
 			array(
 				'dn' => 'raboof',
-				$con->ldapUserDisplayName => 'oofrab'
+				$displayNameAttribute => 'oofrab'
 			)
 		);