diff --git a/include/nuttx/wireless/bluetooth/bt_buf.h b/include/nuttx/wireless/bluetooth/bt_buf.h
index 79a4f6407fd..eb4af7c94a9 100644
--- a/include/nuttx/wireless/bluetooth/bt_buf.h
+++ b/include/nuttx/wireless/bluetooth/bt_buf.h
@@ -62,6 +62,8 @@ enum bt_buf_type_e
   BT_EVT,             /* HCI event */
   BT_ACL_OUT,         /* Outgoing ACL data */
   BT_ACL_IN,          /* Incoming ACL data */
+  BT_ISO_OUT,         /* Outgoing ISO data */
+  BT_ISO_IN,          /* Incoming ISO data */
   BT_DUMMY = BT_CMD   /* Only used for waking up kernel threads */
 };