diff --git a/libavformat/utils.c b/libavformat/utils.c
index 78caf79275..0b84711b7f 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2123,6 +2123,7 @@ int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
             max_ts = av_rescale_rnd(max_ts, time_base.den,
                                     time_base.num * (int64_t)AV_TIME_BASE,
                                     AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
+            stream_index = 0;
         }
 
         ret = s->iformat->read_seek2(s, stream_index, min_ts,