diff --git a/src/boot/efi/sha256.c b/src/boot/efi/sha256.c
index 2108ea29c7..6585fdb9b2 100644
--- a/src/boot/efi/sha256.c
+++ b/src/boot/efi/sha256.c
@@ -25,7 +25,7 @@
 
 #include "sha256.h"
 
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 # define SWAP(n)                                                        \
         (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
 # define SWAP64(n)                              \
diff --git a/src/boot/efi/sha256.h b/src/boot/efi/sha256.h
index 3a43601e73..464be59c25 100644
--- a/src/boot/efi/sha256.h
+++ b/src/boot/efi/sha256.h
@@ -1,8 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include <endian.h>
-
 #include <efi.h>
 #include <efilib.h>