diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
index c1bfd880c89..41372978656 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -3699,8 +3699,10 @@ acpiioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *t
     switch (cmd) {
     case ACPIIO_REQSLPSTATE:
 	state = *(int *)addr;
-	if (state != ACPI_STATE_S5)
-	    return (acpi_ReqSleepState(sc, state));
+	if (state != ACPI_STATE_S5) {
+		EVENTHANDLER_INVOKE(acpi_sleep_event, state);
+		return 0;
+	}
 	device_printf(sc->acpi_dev, "power off via acpi ioctl not supported\n");
 	error = EOPNOTSUPP;
 	break;