diff --git a/subsys/bluetooth/mesh/pb_adv.c b/subsys/bluetooth/mesh/pb_adv.c
index 86f20497704f3..57a7c16b4f8c1 100644
--- a/subsys/bluetooth/mesh/pb_adv.c
+++ b/subsys/bluetooth/mesh/pb_adv.c
@@ -515,7 +515,7 @@ static void gen_prov_cont(struct prov_rx *rx, struct net_buf_simple *buf)
 		return;
 	}
 
-	if (seg > link.rx.last_seg) {
+	if (seg > link.rx.last_seg || seg == 0) {
 		LOG_ERR("Invalid segment index %u", seg);
 		prov_failed(PROV_ERR_NVAL_FMT);
 		return;