diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
index 8b421a4493..3b83075e7a 100644
--- a/libavformat/dashdec.c
+++ b/libavformat/dashdec.c
@@ -2274,6 +2274,7 @@ static int dash_close(AVFormatContext *s)
     DASHContext *c = s->priv_data;
     free_audio_list(c);
     free_video_list(c);
+    free_subtitle_list(c);
     av_dict_free(&c->avio_opts);
     av_freep(&c->base_url);
     return 0;