diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index ecfa306e1375..2e08f5a89463 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -129,6 +129,15 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_INVALID_BDADDR,
+
+	/* When this quirk is set, the duplicate filtering during
+	 * scanning is based on Bluetooth devices addresses. To allow
+	 * RSSI based updates, restart scanning if needed.
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
+	 */
+	HCI_QUIRK_STRICT_DUPLICATE_FILTER,
 };
 
 /* HCI device flags */