diff --git a/controllers/class.Login.php b/controllers/class.Login.php
index d4eb54ee0..51dac6390 100644
--- a/controllers/class.Login.php
+++ b/controllers/class.Login.php
@@ -104,6 +104,9 @@ class SeedDMS_Controller_Login extends SeedDMS_Controller_Common {
 			require_once("../inc/inc.ClassLdapAuthentication.php");
 			$authobj = new SeedDMS_LdapAuthentication($dms, $settings);
 			$user = $authobj->authenticate($login, $pwd);
+			if(!$user) {
+				add_log_line('Authentication against LDAP failed for user '.$login);
+			}
 		} /* }}} */
 
 		/* Authenticate against SeedDMS database {{{ */
diff --git a/webdav/webdav.php b/webdav/webdav.php
index e3ce26d7b..c147a10d0 100644
--- a/webdav/webdav.php
+++ b/webdav/webdav.php
@@ -171,7 +171,7 @@ class HTTP_WebDAV_Server_SeedDMS extends HTTP_WebDAV_Server
 
 		if(!$userobj) {
 			if($this->logger)
-				$this->logger->log('check_auth: No such user', PEAR_LOG_NOTICE);
+				$this->logger->log('check_auth: No such user'.$user, PEAR_LOG_NOTICE);
 			return false;
 		}