diff --git a/gst-libs/gst/rtsp/gstrtspconnection.c b/gst-libs/gst/rtsp/gstrtspconnection.c
index e4a6f93b8b..dba9b7bbc1 100644
--- a/gst-libs/gst/rtsp/gstrtspconnection.c
+++ b/gst-libs/gst/rtsp/gstrtspconnection.c
@@ -360,7 +360,7 @@ gst_rtsp_connection_create (const GstRTSPUrl * url, GstRTSPConnection ** conn)
   newconn->url = gst_rtsp_url_copy (url);
   newconn->timer = g_timer_new ();
   newconn->timeout = 60;
-  newconn->cseq = 1;
+  newconn->cseq = 0;            /* RFC 7826: "it is RECOMMENDED to start at 0." */
 
   newconn->remember_session_id = TRUE;