diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 994a4c964e..48dc39e4a0 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -2033,6 +2033,7 @@ static enum sip_result __sip_reliable_xmit(struct sip_pvt *p, int seqno, int res
 		ast_set_flag(pkt, FLAG_RESPONSE);
 	pkt->data[len] = '\0';
 	pkt->timer_t1 = p->timer_t1;	/* Set SIP timer T1 */
+	pkt->retransid = -1;
 	if (fatal)
 		ast_set_flag(pkt, FLAG_FATAL);
 	if (pkt->timer_t1)
diff --git a/include/asterisk/sched.h b/include/asterisk/sched.h
index 84a65a07ac..5476dadf76 100644
--- a/include/asterisk/sched.h
+++ b/include/asterisk/sched.h
@@ -38,7 +38,7 @@ extern "C" {
 #define AST_SCHED_DEL(sched, id) \
 	do { \
 		int _count = 0; \
-		while (id > -1 && ast_sched_del(sched, id) && _count++ < 10) \
+		while (id > -1 && ast_sched_del(sched, id) && ++_count < 10) \
 			usleep(1); \
 		if (_count == 10) \
 			ast_log(LOG_WARNING, "Unable to cancel schedule ID %d.  This is probably a bug (%s: %s, line %d).\n", id, __FILE__, __PRETTY_FUNCTION__, __LINE__); \