diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index ebe7606ab35dec..2e6fb7381d1d3f 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -2323,4 +2323,12 @@ static inline struct hci_sco_hdr *hci_sco_hdr(const struct sk_buff *skb)
 #define hci_handle(h)		(h & 0x0fff)
 #define hci_flags(h)		(h >> 12)
 
+/* le24 support */
+static inline void hci_cpu_to_le24(__u32 val, __u8 dst[3])
+{
+	dst[0] = val & 0xff;
+	dst[1] = (val & 0xff00) >> 8;
+	dst[2] = (val & 0xff0000) >> 16;
+}
+
 #endif /* __HCI_H */
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index e25e103b7197de..96b0fbcf680396 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1566,8 +1566,6 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 	int err;
 	struct adv_info *adv_instance;
 	bool secondary_adv;
-	/* In ext adv set param interval is 3 octets */
-	const u8 adv_interval[3] = { 0x00, 0x08, 0x00 };
 
 	if (instance > 0) {
 		adv_instance = hci_find_adv_instance(hdev, instance);
@@ -1600,8 +1598,9 @@ int __hci_req_setup_ext_adv_instance(struct hci_request *req, u8 instance)
 
 	memset(&cp, 0, sizeof(cp));
 
-	memcpy(cp.min_interval, adv_interval, sizeof(cp.min_interval));
-	memcpy(cp.max_interval, adv_interval, sizeof(cp.max_interval));
+	/* In ext adv set param interval is 3 octets */
+	hci_cpu_to_le24(hdev->le_adv_min_interval, cp.min_interval);
+	hci_cpu_to_le24(hdev->le_adv_max_interval, cp.max_interval);
 
 	secondary_adv = (flags & MGMT_ADV_FLAG_SEC_MASK);