diff --git a/SdUsbConnect.h b/SdUsbConnect.h
index 87e1771..40104fd 100644
--- a/SdUsbConnect.h
+++ b/SdUsbConnect.h
@@ -2,6 +2,9 @@
 * @file          SdUsbConnect.h
 * @brief         
 ******************************************************************************/
+#ifndef SD_USB_CONNECT_H
+#define SD_USB_CONNECT_H
+
 #include "mbed.h"
 #include "FATFileSystem.h"
 #include "SDBlockDevice_GRBoard.h"
@@ -69,3 +72,5 @@ class SdUsbConnect {
     USBHostMSD usb;
     storage_type_t storage_type;
 };
+
+#endif
diff --git a/USBDevice/USBDevice/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_function_version.h b/USBDevice/USBDevice/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_function_version.h
index d26e3b0..72f1889 100644
--- a/USBDevice/USBDevice/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_function_version.h
+++ b/USBDevice/USBDevice/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_function_version.h
@@ -26,7 +26,10 @@
 * $Date:: 2014-07-09 16:29:19 +0900#$
 * Description  : RZ/A1H R7S72100 USB Sample Program
 *******************************************************************************/
+#ifndef USB_FUNCTION_VERSION_H
+#define USB_FUNCTION_VERSION_H
 
 #define USB_FUNCTION_LOCAL_Rev  "VER080_140709"
 
+#endif
 /* End of File */
diff --git a/USBDevice/USBDevice/USBDescriptor.h b/USBDevice/USBDevice/USBDescriptor.h
index 9d4ce84..8ec6c1f 100644
--- a/USBDevice/USBDevice/USBDescriptor.h
+++ b/USBDevice/USBDevice/USBDescriptor.h
@@ -16,6 +16,9 @@
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+#ifndef USBDESCRIPTOR_H
+#define USBDESCRIPTOR_H
+
 /* Standard descriptor types */
 #define DEVICE_DESCRIPTOR        (1)
 #define CONFIGURATION_DESCRIPTOR (2)
@@ -72,3 +75,5 @@
 #define E_DATA                  (0x00)
 #define E_FEEDBACK              (0x10)
 #define E_IMPLICIT_FEEDBACK     (0x20)
+
+#endif
diff --git a/USBDevice/USBDevice/USBEndpoints_RZ_A1H.h b/USBDevice/USBDevice/USBEndpoints_RZ_A1H.h
index f25a3d8..493b79b 100644
--- a/USBDevice/USBDevice/USBEndpoints_RZ_A1H.h
+++ b/USBDevice/USBDevice/USBEndpoints_RZ_A1H.h
@@ -16,6 +16,9 @@
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+#ifndef USBENDPOINTS_RZ_A1H_H
+#define USBENDPOINTS_RZ_A1H_H
+
 #define NUMBER_OF_LOGICAL_ENDPOINTS (16)
 #define NUMBER_OF_PHYSICAL_ENDPOINTS (NUMBER_OF_LOGICAL_ENDPOINTS * 2)
 
@@ -82,4 +85,5 @@
 #define MAX_PACKET_SIZE_EPINT   (MAX_PACKET_SIZE_EP1)
 #define MAX_PACKET_SIZE_EPISO   (MAX_PACKET_SIZE_EP3)
 
+#endif
 /*EOF*/
diff --git a/USBHost_custom/USBHost/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_host_version.h b/USBHost_custom/USBHost/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_host_version.h
index 33b82ea..2964b54 100644
--- a/USBHost_custom/USBHost/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_host_version.h
+++ b/USBHost_custom/USBHost/TARGET_RENESAS/TARGET_RZA1XX/inc/usb_host_version.h
@@ -26,7 +26,10 @@
 * $Date:: 2014-07-09 16:29:19 +0900#$
 * Description  : RZ/A1H R7S72100 USB Sample Program
 *******************************************************************************/
+#ifndef USB_HOST_VERSION_H
+#define USB_HOST_VERSION_H
 
 #define USB_HOST_LOCAL_Rev      "VER080_140709"
 
+#endif
 /* End of File */