diff --git a/sys/dev/wg/if_wg.c b/sys/dev/wg/if_wg.c
--- a/sys/dev/wg/if_wg.c
+++ b/sys/dev/wg/if_wg.c
@@ -48,7 +48,6 @@
 #include <netinet/udp_var.h>
 #include <netinet6/nd6.h>
 
-#include "support.h"
 #include "wg_noise.h"
 #include "wg_cookie.h"
 #include "version.h"
diff --git a/sys/dev/wg/support.h b/sys/dev/wg/support.h
deleted file mode 100644
--- a/sys/dev/wg/support.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: ISC
- *
- * Copyright (C) 2021 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- * Copyright (c) 2021 Kyle Evans <kevans@FreeBSD.org>
- *
- * support.h contains code that is not _yet_ upstream in FreeBSD's main branch.
- * It is different from compat.h, which is strictly for backports.
- */
-
-#ifndef _WG_SUPPORT
-#define _WG_SUPPORT
-
-#ifndef ck_pr_store_bool
-#define ck_pr_store_bool(dst, val) ck_pr_store_8((uint8_t *)(dst), (uint8_t)(val))
-#endif
-
-#ifndef ck_pr_load_bool
-#define ck_pr_load_bool(src) ((bool)ck_pr_load_8((uint8_t *)(src)))
-#endif
-
-#endif
diff --git a/sys/dev/wg/wg_noise.c b/sys/dev/wg/wg_noise.c
--- a/sys/dev/wg/wg_noise.c
+++ b/sys/dev/wg/wg_noise.c
@@ -20,7 +20,6 @@
 
 #include "crypto.h"
 #include "wg_noise.h"
-#include "support.h"
 
 /* Protocol string constants */
 #define NOISE_HANDSHAKE_NAME	"Noise_IKpsk2_25519_ChaChaPoly_BLAKE2s"