diff --git a/sys/amd64/acpica/acpi_wakeup.c b/sys/amd64/acpica/acpi_wakeup.c
index bff80455544..9afb36ca36a 100644
--- a/sys/amd64/acpica/acpi_wakeup.c
+++ b/sys/amd64/acpica/acpi_wakeup.c
@@ -278,13 +278,13 @@ acpi_sleep_machdep(struct acpi_softc *sc, int state)
 		for (;;)
 			ia32_pause();
 	} else {
-		acpi_resync_clock(sc);
-		PCPU_SET(switchtime, cpu_ticks());
+		PCPU_SET(switchtime, 0);
 		PCPU_SET(switchticks, ticks);
 #ifdef SMP
 		if (wakeup_cpus != 0)
 			acpi_wakeup_cpus(sc, wakeup_cpus);
 #endif
+		acpi_resync_clock(sc);
 		ret = 0;
 	}
 
diff --git a/sys/amd64/amd64/mp_machdep.c b/sys/amd64/amd64/mp_machdep.c
index 7ea4d7d79fe..034ae77cc82 100644
--- a/sys/amd64/amd64/mp_machdep.c
+++ b/sys/amd64/amd64/mp_machdep.c
@@ -1366,7 +1366,7 @@ cpususpend_handler(void)
 		wbinvd();
 		atomic_set_int(&stopped_cpus, cpumask);
 	} else {
-		PCPU_SET(switchtime, cpu_ticks());
+		PCPU_SET(switchtime, 0);
 		PCPU_SET(switchticks, ticks);
 	}