diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index c32ca3643a..b947a50e0a 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -1658,11 +1658,11 @@ static int matroska_read_seek(AVFormatContext *s, int stream_index,
     if ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
         if (st->nb_index_entries)
             url_fseek(s->pb, st->index_entries[st->nb_index_entries-1].pos, SEEK_SET);
-    while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
-        matroska_clear_queue(matroska);
-        if (matroska_parse_cluster(matroska) < 0)
-            break;
-    }
+        while ((index = av_index_search_timestamp(st, timestamp, flags)) < 0) {
+            matroska_clear_queue(matroska);
+            if (matroska_parse_cluster(matroska) < 0)
+                break;
+        }
     }
 
     matroska_clear_queue(matroska);