diff --git a/src/include/ipxe/efi/Protocol/AppleNetBoot.h b/src/include/ipxe/efi/Protocol/AppleNetBoot.h
index 144beff1..5946524f 100644
--- a/src/include/ipxe/efi/Protocol/AppleNetBoot.h
+++ b/src/include/ipxe/efi/Protocol/AppleNetBoot.h
@@ -1,5 +1,5 @@
-#ifndef __EFI_APPLE_NET_BOOT_PROTOCOL_H__
-#define __EFI_APPLE_NET_BOOT_PROTOCOL_H__
+#ifndef _IPXE_EFI_APPLE_NET_BOOT_PROTOCOL_H
+#define _IPXE_EFI_APPLE_NET_BOOT_PROTOCOL_H
 
 /** @file
  *
@@ -43,4 +43,4 @@ struct _EFI_APPLE_NET_BOOT_PROTOCOL
   GET_DHCP_RESPONSE	GetBsdpResponse;
 };
 
-#endif /*__EFI_APPLE_NET_BOOT_PROTOCOL_H__ */
+#endif /*_IPXE_EFI_APPLE_NET_BOOT_PROTOCOL_H */