diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 38130dd925..06417a83ee 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -5660,6 +5660,7 @@ static int sip_hangup(struct ast_channel *ast)
 				}
 			} else {	/* Incoming call, not up */
 				const char *res;
+				AST_SCHED_DEL(sched, p->provisional_keepalive_sched_id);
 				if (p->hangupcause && (res = hangup_cause2sip(p->hangupcause)))
 					transmit_response_reliable(p, res, &p->initreq);
 				else