diff --git a/usr.sbin/efiwake/efiwake.c b/usr.sbin/efiwake/efiwake.c
index 67497e2ede03..9d9e808dff19 100644
--- a/usr.sbin/efiwake/efiwake.c
+++ b/usr.sbin/efiwake/efiwake.c
@@ -1,134 +1,140 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
  *
  * Copyright (c) 2023 Johannes Totz
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
+#include <sys/efiio.h>
 #include <err.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
 #include <string.h>
 #include <sysexits.h>
 #include <unistd.h>
-#include <sys/efiio.h>
 
-static void usage(void)
+static void
+usage(void)
 {
-	printf("Usage:\n"
-	    "  efiwake                          -- print out current EFI time and wake time\n"
+	fprintf(stderr, "Usage:\n"
+	    "  efiwake                          -- print out current "
+	        "EFI time and wake time\n"
 	    "  efiwake -d                       -- disable wake time\n"
 	    "  efiwake -e yyyy-mm-ddThh:mm:ss   -- enable wake time\n"
 	);
-
 	exit(EX_USAGE);
 }
 
-int main(int argc, char **argv)
+int
+main(int argc, char **argv)
 {
+	struct efi_tm now;
 	struct efi_waketime_ioc	waketime;
-	int error, ch;
-	bool enable = false, disable = false;
+	int ch, error, efi_fd;
+	bool disable = false, enable = false;
 
 	memset(&waketime, 0, sizeof(waketime));
 
 	while ((ch = getopt(argc, argv, "de:")) != -1) {
 		switch (ch) {
 		case 'd':
 			disable = true;
 			break;
 		case 'e':
 			if (sscanf(optarg,
 			    "%hu-%02hhu-%02hhuT%02hhu:%02hhu:%02hhu",
-			    &waketime.waketime.tm_year, &waketime.waketime.tm_mon,
-			    &waketime.waketime.tm_mday, &waketime.waketime.tm_hour,
-			    &waketime.waketime.tm_min, &waketime.waketime.tm_sec)
-			    != 6) {
+			    &waketime.waketime.tm_year,
+			    &waketime.waketime.tm_mon,
+			    &waketime.waketime.tm_mday,
+			    &waketime.waketime.tm_hour,
+			    &waketime.waketime.tm_min,
+			    &waketime.waketime.tm_sec) != 6) {
 				usage();
 			}
 			enable = true;
 			break;
 		case '?':
 		default:
 			usage();
 		}
 	}
 	argc -= optind;
 	argv += optind;
 
 	if (argc > 0)
 		usage();
 	if (disable && enable)
 		usage();
 
-	int efi_fd = open("/dev/efi", O_RDWR);
+	efi_fd = open("/dev/efi", O_RDWR);
 	if (efi_fd < 0)
 		err(EX_OSERR, "cannot open /dev/efi");
 
-	struct efi_tm	now;
 	error = ioctl(efi_fd, EFIIOC_GET_TIME, &now);
 	if (error != 0)
 		err(EX_OSERR, "cannot get EFI time");
 
 	/* EFI's time can be different from kernel's time. */
 	printf("Current EFI time: %u-%02u-%02uT%02u:%02u:%02u\n",
 	    now.tm_year, now.tm_mon, now.tm_mday, now.tm_hour, now.tm_min,
 	    now.tm_sec);
 
 	if (disable) {
-		/* It's tempting to preserve the current timer value.
+		/*
+		 * It's tempting to preserve the current timer value.
 		 * However, wonky EFI implementations sometimes return bogus
 		 * dates for the wake timer and would then fail disabling it
 		 * here.
 		 * A safe timer value is the current EFI time.
 		 */
 		waketime.waketime = now;
 		waketime.enabled = 0;
 		error = ioctl(efi_fd, EFIIOC_SET_WAKETIME, &waketime);
 		if (error != 0)
 			err(EX_OSERR, "cannot disable EFI wake time");
 	}
 	if (enable) {
 		waketime.enabled = 1;
 		error = ioctl(efi_fd, EFIIOC_SET_WAKETIME, &waketime);
 		if (error != 0)
 			err(EX_OSERR, "cannot enable EFI wake time");
 	}
 
 	/* Confirm to user what the wake time has been set to. */
 	error = ioctl(efi_fd, EFIIOC_GET_WAKETIME, &waketime);
 	if (error != 0)
 		err(EX_OSERR, "cannot get EFI wake time");
 
-	printf("EFI wake time: %u-%02u-%02uT%02u:%02u:%02u; enabled=%i, pending=%i\n",
+	printf("EFI wake time: %u-%02u-%02uT%02u:%02u:%02u; "
+	    "enabled=%i, pending=%i\n",
 	    waketime.waketime.tm_year, waketime.waketime.tm_mon,
 	    waketime.waketime.tm_mday, waketime.waketime.tm_hour,
 	    waketime.waketime.tm_min, waketime.waketime.tm_sec,
 	    waketime.enabled, waketime.pending);
 
 	close(efi_fd);
 	return (0);
 }