diff --git a/drivers/wireless/bluetooth/bt_uart.h b/drivers/wireless/bluetooth/bt_uart.h
index 98f6702f68..9f0277f885 100644
--- a/drivers/wireless/bluetooth/bt_uart.h
+++ b/drivers/wireless/bluetooth/bt_uart.h
@@ -40,6 +40,9 @@
  *
  ****************************************************************************/
 
+#ifndef __DRIVER_WIRELESS_BLUETOOTH_BT_UART_H
+#define __DRIVER_WIRELESS_BLUETOOTH_BT_UART_H
+
 /****************************************************************************
  * Included Files
  ****************************************************************************/
@@ -55,14 +58,6 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#define H4_HEADER_SIZE  1
-
-#define H4_CMD           0x01
-#define H4_ACL           0x02
-#define H4_SCO           0x03
-#define H4_EVT           0x04
-#define H4_ISO           0x05
-
 #ifdef CONFIG_BLUETOOTH_UART_DUMP
 #  define BT_DUMP(m,b,l) lib_dumpbuffer(m,b,l)
 #else
@@ -101,3 +96,5 @@ struct btuart_upperhalf_s
 
 int btuart_send(FAR const struct bt_driver_s *dev, FAR struct bt_buf_s *buf);
 int btuart_open(FAR const struct bt_driver_s *dev);
+
+#endif /* __DRIVER_WIRELESS_BLUETOOTH_BT_UART_H */
diff --git a/include/nuttx/wireless/bluetooth/bt_uart.h b/include/nuttx/wireless/bluetooth/bt_uart.h
index 2512826d59..c62445feae 100644
--- a/include/nuttx/wireless/bluetooth/bt_uart.h
+++ b/include/nuttx/wireless/bluetooth/bt_uart.h
@@ -51,6 +51,18 @@
 
 #include <stdbool.h>
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define H4_HEADER_SIZE  1
+
+#define H4_CMD           0x01
+#define H4_ACL           0x02
+#define H4_SCO           0x03
+#define H4_EVT           0x04
+#define H4_ISO           0x05
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/