diff --git a/channels/chan_sip.c b/channels/chan_sip.c index e6e82db..4e0b703 100644 --- a/channels/chan_sip.c +++ b/channels/chan_sip.c @@ -27174,7 +27174,7 @@ static int handle_request_cancel(struct sip_pvt *p, struct sip_request *req) } else { sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT); } - if (ast_str_strlen(p->initreq.data) > 0) { + if (p->initreq.data && ast_str_strlen(p->initreq.data) > 0) { struct sip_pkt *pkt, *prev_pkt; /* If the CANCEL we are receiving is a retransmission, and we already have scheduled * a reliable 487, then we don't want to schedule another one on top of the previous