diff --git a/usr.bin/time/time.c b/usr.bin/time/time.c
index 8e45f128331..f883db17a59 100644
--- a/usr.bin/time/time.c
+++ b/usr.bin/time/time.c
@@ -52,6 +52,8 @@ static char sccsid[] = "@(#)time.c	8.1 (Berkeley) 6/6/93";
 #include <errno.h>
 #include <locale.h>
 #include <signal.h>
+#include <stdatomic.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
@@ -137,7 +139,10 @@ main(int argc, char **argv)
 	(void)signal(SIGINFO, siginfo);
 	(void)siginterrupt(SIGINFO, 1);
 	while (wait4(pid, &status, 0, &ru) != pid) {
-		if (siginfo_recvd) {
+		bool do_siginfo = siginfo_recvd != 0;
+
+		atomic_signal_fence(memory_order_acquire);
+		if (do_siginfo) {
 			siginfo_recvd = 0;
 			if (clock_gettime(CLOCK_MONOTONIC, &after))
 				err(1, "clock_gettime");
@@ -308,4 +313,5 @@ siginfo(int sig __unused)
 {
 
 	siginfo_recvd = 1;
+	atomic_signal_fence(memory_order_release);
 }