diff --git a/libavformat/utils.c b/libavformat/utils.c
index c9bc6f2376..47e76ec7a2 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -708,7 +708,7 @@ int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
                 return ret;
             for (i = 0; i < s->nb_streams; i++) {
                 st = s->streams[i];
-                if (st->probe_packets)
+                if (st->probe_packets || st->request_probe > 0)
                     if ((err = probe_codec(s, st, NULL)) < 0)
                         return err;
                 av_assert0(st->request_probe <= 0);