diff --git a/yt_dlp/postprocessor/ffmpeg.py b/yt_dlp/postprocessor/ffmpeg.py
index 4689a96db4..a79b31f895 100644
--- a/yt_dlp/postprocessor/ffmpeg.py
+++ b/yt_dlp/postprocessor/ffmpeg.py
@@ -664,7 +664,7 @@ class FFmpegEmbedSubtitlePP(FFmpegPostProcessor):
                 '-map', '-0:s',
 
                 '-map', f'{i + 1}:0',
-                f'-metadata:s:s:{i}', f'language={lang_code}'
+                f'-metadata:s:s:{i}', f'language={lang_code}',
             ])
 
             if name: