diff --git a/classes/ConvertedPlaylistArchiveStream.php b/classes/ConvertedPlaylistArchiveStream.php
index ae16fe9..2eb2241 100644
--- a/classes/ConvertedPlaylistArchiveStream.php
+++ b/classes/ConvertedPlaylistArchiveStream.php
@@ -7,6 +7,9 @@ namespace Alltube;
 
 use Slim\Http\Stream;
 
+/**
+ * Class used to create a Zip archive from converted playlists entries.
+ */
 class ConvertedPlaylistArchiveStream extends PlaylistArchiveStream
 {
     /**
diff --git a/classes/Video.php b/classes/Video.php
index 079cf96..4dc64d9 100644
--- a/classes/Video.php
+++ b/classes/Video.php
@@ -566,6 +566,8 @@ class Video
     /**
      * Get a HTTP response containing the video.
      *
+     * @param array $headers HTTP headers of the request
+     *
      * @return Response
      */
     public function getHttpResponse(array $headers = [])