From 0434e3e22f746ed85b1fad48153ac7ace5fc57ac Mon Sep 17 00:00:00 2001
From: Niklas <dev@n1klas.net>
Date: Fri, 5 Oct 2018 00:32:16 +0200
Subject: [PATCH] [ard] prevent empty list for a key

---
 youtube_dl/extractor/ard.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/extractor/ard.py b/youtube_dl/extractor/ard.py
index ed53093b9..b3e604587 100644
--- a/youtube_dl/extractor/ard.py
+++ b/youtube_dl/extractor/ard.py
@@ -286,7 +286,7 @@ class ARDIE(InfoExtractor):
         return {
             'id': mobj.group('id'),
             'formats': formats,
-            'subtitles': {'de': subtitles},
+            'subtitles': {'de': subtitles} if subtitles else None,
             'display_id': display_id,
             'title': video_node.find('./title').text,
             'duration': parse_duration(video_node.find('./duration').text),