diff --git a/subsys/bluetooth/host/mesh/prov.c b/subsys/bluetooth/host/mesh/prov.c
index 9bc2fe4bf1a..b60e73ae762 100644
--- a/subsys/bluetooth/host/mesh/prov.c
+++ b/subsys/bluetooth/host/mesh/prov.c
@@ -150,6 +150,9 @@ struct prov_link {
 		/* Start timestamp of the transaction */
 		s64_t start;
 
+		/* Transaction id*/
+		u8_t id;
+
 		/* Pending outgoing buffer(s) */
 		struct net_buf *buf[3];
 
@@ -358,11 +361,21 @@ static u8_t last_seg(u8_t len)
 	return 1 + (len / CONT_PAYLOAD_MAX);
 }
 
+static inline u8_t next_transaction_id(void)
+{
+	if (link.tx.id != 0 && link.tx.id != 0xFF) {
+		return ++link.tx.id;
+	}
+
+	link.tx.id = 0x80;
+	return link.tx.id;
+}
+
 static int prov_send_adv(struct net_buf_simple *msg)
 {
-	static u8_t id = 0x80;
 	struct net_buf *start, *buf;
 	u8_t seg_len, seg_id;
+	u8_t xact_id;
 
 	BT_DBG("len %u: %s", msg->len, bt_hex(msg->data, msg->len));
 
@@ -373,8 +386,9 @@ static int prov_send_adv(struct net_buf_simple *msg)
 		return -ENOBUFS;
 	}
 
+	xact_id = next_transaction_id();
 	net_buf_add_be32(start, link.id);
-	net_buf_add_u8(start, id);
+	net_buf_add_u8(start, xact_id);
 
 	net_buf_add_u8(start, GPC_START(last_seg(msg->len)));
 	net_buf_add_be16(start, msg->len);
@@ -409,14 +423,12 @@ static int prov_send_adv(struct net_buf_simple *msg)
 		       bt_hex(msg->data, seg_len));
 
 		net_buf_add_be32(buf, link.id);
-		net_buf_add_u8(buf, id);
+		net_buf_add_u8(buf, xact_id);
 		net_buf_add_u8(buf, GPC_CONT(seg_id));
 		net_buf_add_mem(buf, msg->data, seg_len);
 		net_buf_simple_pull(msg, seg_len);
 	}
 
-	id++;
-
 	send_reliable();
 
 	return 0;
@@ -1264,6 +1276,14 @@ static void gen_prov_cont(struct prov_rx *rx, struct net_buf_simple *buf)
 static void gen_prov_ack(struct prov_rx *rx, struct net_buf_simple *buf)
 {
 	BT_DBG("len %u", buf->len);
+
+	if (!link.tx.buf[0]) {
+		return;
+	}
+
+	if (rx->xact_id == link.tx.id) {
+		prov_clear_tx();
+	}
 }
 
 static void gen_prov_start(struct prov_rx *rx, struct net_buf_simple *buf)