diff --git a/lib/private/files/cache/scanner.php b/lib/private/files/cache/scanner.php
index 2cadaa1cdc0e6b57031bce994ab8d5218eea4c90..12aa05277a1d4cb38911e2618ce7cc993aace524 100644
--- a/lib/private/files/cache/scanner.php
+++ b/lib/private/files/cache/scanner.php
@@ -124,9 +124,10 @@ class Scanner extends BasicEmitter {
 	 * @param int $reuseExisting
 	 * @param int $parentId
 	 * @param array | null $cacheData existing data in the cache for the file to be scanned
-	 * @param bool $lock
+	 * @param bool $lock set to false to disable getting an additional read lock during scanning
 	 * @return array an array of metadata of the scanned file
 	 * @throws \OC\ServerNotAvailableException
+	 * @throws \OCP\Lock\LockedException
 	 */
 	public function scanFile($file, $reuseExisting = 0, $parentId = -1, $cacheData = null, $lock = true) {
 		if (!self::isPartialFile($file)
@@ -251,7 +252,7 @@ class Scanner extends BasicEmitter {
 	 * @param string $path
 	 * @param bool $recursive
 	 * @param int $reuse
-	 * @param bool $lock
+	 * @param bool $lock set to false to disable getting an additional read lock during scanning
 	 * @return array an array of the meta data of the scanned file or folder
 	 */
 	public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $lock = true) {
@@ -314,7 +315,7 @@ class Scanner extends BasicEmitter {
 	 * @param bool $recursive
 	 * @param int $reuse
 	 * @param array $folderData existing cache data for the folder to be scanned
-	 * @param bool $lock
+	 * @param bool $lock set to false to disable getting an additional read lock during scanning
 	 * @return int the size of the scanned folder or -1 if the size is unknown at this stage
 	 */
 	protected function scanChildren($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1, $folderData = null, $lock = true) {