diff --git a/hls/ngx_rtmp_hls_module.c b/hls/ngx_rtmp_hls_module.c
index 2a82d5d..22d5437 100644
--- a/hls/ngx_rtmp_hls_module.c
+++ b/hls/ngx_rtmp_hls_module.c
@@ -69,6 +69,7 @@ typedef struct {
     uint64_t                            key_id;
     ngx_uint_t                          nfrags;
     ngx_rtmp_hls_frag_t                *frags; /* circular 2 * winfrags + 1 */
+    uint64_t                            mediaseq;
 
     ngx_uint_t                          audio_cc;
     ngx_uint_t                          video_cc;
@@ -601,7 +602,7 @@ ngx_rtmp_hls_write_playlist(ngx_rtmp_session_t *s)
                      "#EXT-X-VERSION:3\n"
                      "#EXT-X-MEDIA-SEQUENCE:%uL\n"
                      "#EXT-X-TARGETDURATION:%ui\n",
-                     ctx->frag, max_frag);
+                     ctx->mediaseq++, max_frag);
 
     if (hacf->type == NGX_RTMP_HLS_TYPE_EVENT) {
         p = ngx_slprintf(p, end, "#EXT-X-PLAYLIST-TYPE:EVENT\n");