diff --git a/src/htsp_server.c b/src/htsp_server.c
index 36a586b..f5f9dac 100644
--- a/src/htsp_server.c
+++ b/src/htsp_server.c
@@ -2962,6 +2962,8 @@ htsp_stream_deliver(htsp_subscription_t *hs, th_pkt_t *pkt)
   uint32_t dur = hs->hs_90khz ? pkt->pkt_duration : ts_rescale(pkt->pkt_duration, 1000000);
   htsmsg_add_u32(m, "duration", dur);

+  if (pkt->pkt_header && pktbuf_len(pkt->pkt_header) == 5) pkt->pkt_header->pb_size = 2;
+
   pkt = pkt_merge_header(pkt);

   /**