diff --git a/lib/private/Streamer.php b/lib/private/Streamer.php
index 52eeea422ef4ac1de19e4ea7cc0f34ab671ff2e2..7b178fda65293dfa3a7b43448f0f6ea830142fac 100644
--- a/lib/private/Streamer.php
+++ b/lib/private/Streamer.php
@@ -92,6 +92,7 @@ class Streamer {
 	 * @param string $stream Stream to read data from
 	 * @param string $internalName Filepath and name to be used in the archive.
 	 * @param int $size Filesize
+	 * @param int|bool $time File mtime as int, or false
 	 * @return bool $success
 	 */
 	public function addFileFromStream($stream, $internalName, $size, $time) {