diff --git a/ngx_rtmp_cmd_module.c b/ngx_rtmp_cmd_module.c
index af63ed1..ffd03a7 100644
--- a/ngx_rtmp_cmd_module.c
+++ b/ngx_rtmp_cmd_module.c
@@ -214,7 +214,7 @@ ngx_rtmp_cmd_connect(ngx_rtmp_session_t *s, ngx_rtmp_connect_t *v)
     s->connected = 1;
 
     ngx_memzero(&h, sizeof(h));
-    h.csid = NGX_RTMP_CMD_CSID_AMF_INI;
+    h.csid = NGX_RTMP_CSID_AMF_INI;
     h.type = NGX_RTMP_MSG_AMF_CMD;
 
 
@@ -321,10 +321,10 @@ ngx_rtmp_cmd_create_stream(ngx_rtmp_session_t *s, ngx_rtmp_create_stream_t *v)
     };
 
     trans = v->trans;
-    stream = NGX_RTMP_CMD_MSID;
+    stream = NGX_RTMP_MSID;
 
     ngx_memzero(&h, sizeof(h));
-    h.csid = NGX_RTMP_CMD_CSID_AMF_INI;
+    h.csid = NGX_RTMP_CSID_AMF_INI;
     h.type = NGX_RTMP_MSG_AMF_CMD;
 
     ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
@@ -369,7 +369,7 @@ ngx_rtmp_cmd_close_stream_init(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
 static ngx_int_t
 ngx_rtmp_cmd_close_stream(ngx_rtmp_session_t *s, ngx_rtmp_close_stream_t *v)
 {
-    ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_CMD_MSID);
+    ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_MSID);
 
     /* Whatever happens return OK
      * since we should be careful with destruction */
@@ -537,8 +537,8 @@ ngx_rtmp_cmd_publish(ngx_rtmp_session_t *s, ngx_rtmp_publish_t *v)
     /* send onStatus reply */
     memset(&h, 0, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
     if (ngx_rtmp_send_amf(s, &h, out_elts,
                 sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK)
@@ -630,8 +630,8 @@ ngx_rtmp_cmd_fcpublish(ngx_rtmp_session_t *s, ngx_rtmp_fcpublish_t *v)
     /* send onFCPublish reply */
     memset(&h, 0, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
     if (ngx_rtmp_send_amf(s, &h, out_elts,
                 sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK)
@@ -818,15 +818,15 @@ ngx_rtmp_cmd_play(ngx_rtmp_session_t *s, ngx_rtmp_play_t *v)
     /* send onStatus reply */
     memset(&h, 0, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
     /*
-    if (ngx_rtmp_send_user_recorded(s, NGX_RTMP_CMD_MSID) != NGX_OK) {
+    if (ngx_rtmp_send_user_recorded(s, NGX_RTMP_MSID) != NGX_OK) {
         return NGX_ERROR;
     }*/
 
-    if (ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_CMD_MSID) != NGX_OK) {
+    if (ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_MSID) != NGX_OK) {
         return NGX_ERROR;
     }
 
@@ -943,8 +943,8 @@ ngx_rtmp_cmd_fcsubscribe(ngx_rtmp_session_t *s, ngx_rtmp_fcsubscribe_t *v)
     /* send onFCSubscribe reply */
     memset(&h, 0, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
     if (ngx_rtmp_send_amf(s, &h, out_elts,
                 sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK)
@@ -1048,13 +1048,13 @@ ngx_rtmp_cmd_pause(ngx_rtmp_session_t *s, ngx_rtmp_pause_t *v)
     /* send onStatus reply */
     ngx_memzero(&h, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
     if (v->pause) {
         out_inf[0].data = "NetStream.Pause.Notify";
         out_inf[2].data = "Paused.";
-        return ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_CMD_MSID) != NGX_OK
+        return ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_MSID) != NGX_OK
             || ngx_rtmp_send_amf(s, &h, out_elts,
                     sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK
             ? NGX_ERROR
@@ -1063,7 +1063,7 @@ ngx_rtmp_cmd_pause(ngx_rtmp_session_t *s, ngx_rtmp_pause_t *v)
 
     out_inf[0].data = "NetStream.Unpause.Notify";
     out_inf[2].data = "Unpaused.";
-    return ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_CMD_MSID) != NGX_OK
+    return ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_MSID) != NGX_OK
         || ngx_rtmp_send_amf(s, &h, out_elts,
                 sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK
         ? NGX_ERROR
@@ -1168,11 +1168,11 @@ ngx_rtmp_cmd_seek(ngx_rtmp_session_t *s, ngx_rtmp_seek_t *v)
     /* send onStatus reply */
     ngx_memzero(&h, sizeof(h));
     h.type = NGX_RTMP_MSG_AMF_CMD;
-    h.csid = NGX_RTMP_CMD_CSID_AMF;
-    h.msid = NGX_RTMP_CMD_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
 
-    return (ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_CMD_MSID) != NGX_OK
-        || ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_CMD_MSID) != NGX_OK
+    return (ngx_rtmp_send_user_stream_eof(s, NGX_RTMP_MSID) != NGX_OK
+        || ngx_rtmp_send_user_stream_begin(s, NGX_RTMP_MSID) != NGX_OK
         || ngx_rtmp_send_amf(s, &h, out_elts,
             sizeof(out_elts) / sizeof(out_elts[0])) != NGX_OK)
         ? NGX_ERROR
diff --git a/ngx_rtmp_codec_module.c b/ngx_rtmp_codec_module.c
index 657edc0..a8d23b9 100644
--- a/ngx_rtmp_codec_module.c
+++ b/ngx_rtmp_codec_module.c
@@ -290,11 +290,11 @@ ngx_rtmp_codec_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
 
     /* equal headers; timeout diff is zero */
     ngx_memzero(&ch, sizeof(ch));
-    ch.msid = NGX_RTMP_LIVE_MSID;
+    ch.msid = NGX_RTMP_MSID;
     ch.type = h->type;
     ch.csid = (h->type == NGX_RTMP_MSG_VIDEO
-        ? NGX_RTMP_LIVE_CSID_VIDEO
-        : NGX_RTMP_LIVE_CSID_AUDIO);
+        ? NGX_RTMP_CSID_VIDEO
+        : NGX_RTMP_CSID_AUDIO);
     lh = ch;
     *header = ngx_rtmp_append_shared_bufs(cscf, NULL, in);
     *pheader = ngx_rtmp_append_shared_bufs(cscf, NULL, in);
@@ -428,8 +428,8 @@ ngx_rtmp_codec_update_meta(ngx_rtmp_session_t *s)
     }
 
     ngx_memzero(&h, sizeof(h));
-    h.csid = NGX_RTMP_LIVE_CSID_META;
-    h.msid = NGX_RTMP_LIVE_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
+    h.msid = NGX_RTMP_MSID;
     h.type = NGX_RTMP_MSG_AMF_META;
     ngx_rtmp_prepare_message(s, &h, NULL, ctx->meta);
 
diff --git a/ngx_rtmp_flv_module.c b/ngx_rtmp_flv_module.c
index 9e8163e..17fc050 100644
--- a/ngx_rtmp_flv_module.c
+++ b/ngx_rtmp_flv_module.c
@@ -343,8 +343,8 @@ ngx_rtmp_flv_read_meta(ngx_rtmp_session_t *s, ngx_file_t *f)
     ngx_memzero(&h, sizeof(h));
 
     h.type = NGX_RTMP_MSG_AMF_META;
-    h.msid = NGX_RTMP_LIVE_MSID;
-    h.csid = NGX_RTMP_LIVE_CSID_META;
+    h.msid = NGX_RTMP_MSID;
+    h.csid = NGX_RTMP_CSID_AMF;
 
     size = 0;
     ngx_rtmp_rmemcpy(&size, ngx_rtmp_flv_header + 1, 3);
@@ -431,7 +431,7 @@ ngx_rtmp_flv_send(ngx_rtmp_session_t *s, ngx_file_t *f)
     /* parse header fields */
     ngx_memzero(&h, sizeof(h));
 
-    h.msid = NGX_RTMP_LIVE_MSID;
+    h.msid = NGX_RTMP_MSID;
     h.type = ngx_rtmp_flv_header[0];
 
     size = 0;
diff --git a/ngx_rtmp_live_module.c b/ngx_rtmp_live_module.c
index bca2c03..a406146 100644
--- a/ngx_rtmp_live_module.c
+++ b/ngx_rtmp_live_module.c
@@ -337,18 +337,18 @@ ngx_rtmp_live_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
     ngx_memzero(&ch, sizeof(ch));
     ngx_memzero(&lh, sizeof(lh));
     ch.timestamp = h->timestamp;
-    ch.msid = NGX_RTMP_LIVE_MSID;
+    ch.msid = NGX_RTMP_MSID;
     ch.type = h->type;
     lh.msid = ch.msid;
     if (h->type == NGX_RTMP_MSG_VIDEO) {
         prio = ngx_rtmp_get_video_frame_type(in);
-        ch.csid = NGX_RTMP_LIVE_CSID_VIDEO;
+        ch.csid = NGX_RTMP_CSID_VIDEO;
         lh.timestamp = ctx->last_video;
         ctx->last_video = ch.timestamp;
     } else {
         /* audio priority is the same as video key frame's */
         prio = NGX_RTMP_VIDEO_KEY_FRAME;
-        ch.csid = NGX_RTMP_LIVE_CSID_AUDIO;
+        ch.csid = NGX_RTMP_CSID_AUDIO;
         lh.timestamp = ctx->last_audio;
         ctx->last_audio = ch.timestamp;
     }
diff --git a/ngx_rtmp_streams.h b/ngx_rtmp_streams.h
index bf1ec7b..9f15475 100644
--- a/ngx_rtmp_streams.h
+++ b/ngx_rtmp_streams.h
@@ -15,14 +15,4 @@
 #define NGX_RTMP_CSID_VIDEO             7
 
 
-/*legacy*/
-#define NGX_RTMP_CMD_CSID_AMF_INI       NGX_RTMP_CSID_AMF_INI
-#define NGX_RTMP_CMD_CSID_AMF           NGX_RTMP_CSID_AMF
-#define NGX_RTMP_CMD_MSID               NGX_RTMP_MSID
-#define NGX_RTMP_LIVE_CSID_META         NGX_RTMP_CSID_AMF
-#define NGX_RTMP_LIVE_CSID_AUDIO        NGX_RTMP_CSID_AUDIO
-#define NGX_RTMP_LIVE_CSID_VIDEO        NGX_RTMP_CSID_VIDEO
-#define NGX_RTMP_LIVE_MSID              NGX_RTMP_MSID
-
-
 #endif /* _NGX_RTMP_STREAMS_H_INCLUDED_ */