diff --git a/lib/libc/sys/clock_gettime.c b/lib/libc/sys/clock_gettime.c
index ec8ec13a754d..b2a414455245 100644
--- a/lib/libc/sys/clock_gettime.c
+++ b/lib/libc/sys/clock_gettime.c
@@ -1,54 +1,58 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
  *
  * 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/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/vdso.h>
 #include <errno.h>
 #include <time.h>
 #include "libc_private.h"
 
 int __clock_gettime(clockid_t, struct timespec *ts);
 
 __weak_reference(__clock_gettime, clock_gettime);
 
 int
 __clock_gettime(clockid_t clock_id, struct timespec *ts)
 {
 	int error;
 
 	if (__vdso_clock_gettime != NULL && __vdso_gettc != NULL)
 		error = __vdso_clock_gettime(clock_id, ts);
 	else
 		error = ENOSYS;
-	if (error == ENOSYS)
+	if (error == ENOSYS) {
 		error = __sys_clock_gettime(clock_id, ts);
+	} else if (error != 0) {
+		errno = error;
+		error = -1;
+	}
 	return (error);
 }
diff --git a/lib/libc/sys/gettimeofday.c b/lib/libc/sys/gettimeofday.c
index 22177b15a5c7..d955aaa907e2 100644
--- a/lib/libc/sys/gettimeofday.c
+++ b/lib/libc/sys/gettimeofday.c
@@ -1,50 +1,54 @@
 /*-
  * SPDX-License-Identifier: BSD-2-Clause
  *
  * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
  *
  * 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/cdefs.h>
 __FBSDID("$FreeBSD$");
 
 #include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/vdso.h>
 #include <errno.h>
 #include "libc_private.h"
 
 int __gettimeofday(struct timeval *tv, struct timezone *tz);
 
 __weak_reference(__gettimeofday, gettimeofday);
 
 int
 __gettimeofday(struct timeval *tv, struct timezone *tz)
 {
 	int error;
 
 	error = __vdso_gettimeofday(tv, tz);
-	if (error == ENOSYS)
+	if (error == ENOSYS) {
 		error = __sys_gettimeofday(tv, tz);
+	} else if (error != 0) {
+		errno = error;
+		error = -1;
+	}
 	return (error);
 }