diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 961c7f4de4..861350bd4c 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -23194,6 +23194,9 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 				}
 			}
 			transmit_response_reliable(p, "491 Request Pending", req);
+			p->pendinginvite = seqno;
+			check_via(p, req);
+			copy_request(&p->initreq, req);
 			ast_debug(1, "Got INVITE on call where we already have pending INVITE, deferring that - %s\n", p->callid);
 			/* Don't destroy dialog here */
 			res = INV_REQ_FAILED;
@@ -23213,6 +23216,9 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 		if (p->owner) {
 			ast_debug(3, "INVITE w Replaces on existing call? Refusing action. [%s]\n", p->callid);
 			transmit_response_reliable(p, "400 Bad request", req);	/* The best way to not not accept the transfer */
+			p->pendinginvite = seqno;
+			check_via(p, req);
+			copy_request(&p->initreq, req);
 			/* Do not destroy existing call */
 			res = INV_REQ_ERROR;
 			goto request_invite_cleanup;
@@ -23230,6 +23236,9 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 			sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
 			p->invitestate = INV_COMPLETED;
 			res = INV_REQ_ERROR;
+			p->pendinginvite = seqno;
+			check_via(p, req);
+			copy_request(&p->initreq, req);
 			goto request_invite_cleanup;
 		}
 
@@ -23331,6 +23340,9 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
 			refer_locked = 0;
 			p->invitestate = INV_COMPLETED;
 			res = INV_REQ_ERROR;
+			p->pendinginvite = seqno;
+			check_via(p, req);
+			copy_request(&p->initreq, req);
 			goto request_invite_cleanup;
 		}
 	}