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-rw-r--r--pjsip/src/pjsip-ua/sip_100rel.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/pjsip/src/pjsip-ua/sip_100rel.c b/pjsip/src/pjsip-ua/sip_100rel.c
index 0aa19557..eb9e5878 100644
--- a/pjsip/src/pjsip-ua/sip_100rel.c
+++ b/pjsip/src/pjsip-ua/sip_100rel.c
@@ -856,7 +856,7 @@ PJ_DEF(pj_status_t) pjsip_100rel_tx_response(pjsip_inv_session *inv,
dd->uas_state = PJ_POOL_ZALLOC_T(inv->dlg->pool,
uas_state_t);
dd->uas_state->cseq = cseq_hdr->cseq;
- dd->uas_state->rseq = pj_rand() % 0x7FFF;
+ dd->uas_state->rseq = (pj_rand() % 0x7FFF) + 1;
pj_list_init(&dd->uas_state->tx_data_list);
dd->uas_state->retransmit_timer.user_data = dd;
dd->uas_state->retransmit_timer.cb = &on_retransmit;