diff --git a/nimble/host/mesh/src/prov.c b/nimble/host/mesh/src/prov.c
index 056186a10..88475c108 100644
--- a/nimble/host/mesh/src/prov.c
+++ b/nimble/host/mesh/src/prov.c
@@ -47,6 +47,9 @@
 #define INPUT_OOB_NUMBER       0x02
 #define INPUT_OOB_STRING       0x03
 
+#define PUB_KEY_NO_OOB         0x00
+#define PUB_KEY_OOB            0x01
+
 #define PROV_ERR_NONE          0x00
 #define PROV_ERR_NVAL_PDU      0x01
 #define PROV_ERR_NVAL_FMT      0x02
@@ -517,8 +520,8 @@ static void prov_invite(const u8_t *data)
 	net_buf_simple_add_be16(buf, BIT(PROV_ALG_P256));
 
 	/* Public Key Type */
-	/*PTS OOB*/
-	net_buf_simple_add_u8(buf, 0x00);
+	/* Only No OOB Public Key is supported*/
+	net_buf_simple_add_u8(buf, PUB_KEY_NO_OOB);
 
 	/* Static OOB Type */
 	net_buf_simple_add_u8(buf, prov->static_val ? BIT(0) : 0x00);
@@ -720,7 +723,7 @@ static void prov_start(const u8_t *data)
 		return;
 	}
 
-	if (data[1] > 0x01) {
+	if (data[1] != PUB_KEY_NO_OOB) {
 		BT_ERR("Invalid public key value: 0x%02x", data[1]);
 		prov_send_fail_msg(PROV_ERR_NVAL_FMT);
 		atomic_set_bit(link.flags, LINK_INVALID);