diff --git a/gst/rtpmanager/gstrtprtxreceive.c b/gst/rtpmanager/gstrtprtxreceive.c
index a667d1076a..91edda27c6 100644
--- a/gst/rtpmanager/gstrtprtxreceive.c
+++ b/gst/rtpmanager/gstrtprtxreceive.c
@@ -472,6 +472,7 @@ _gst_rtp_buffer_new_from_rtx (GstRTPBuffer * rtp, guint32 ssrc1,
 
   gst_buffer_copy_into (new_buffer, rtp->buffer,
       GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
+  GST_BUFFER_FLAG_SET (new_buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);
 
   return new_buffer;
 }