diff --git a/sys/compat/cloudabi/cloudabi_clock.c b/sys/compat/cloudabi/cloudabi_clock.c
index b26d98eec69..ce53a118d88 100644
--- a/sys/compat/cloudabi/cloudabi_clock.c
+++ b/sys/compat/cloudabi/cloudabi_clock.c
@@ -117,7 +117,7 @@ cloudabi_sys_clock_res_get(struct thread *td,
 	error = cloudabi_convert_timespec(&ts, &cts);
 	if (error != 0)
 		return (error);
-	td->td_retval[0] = cts;
+	memcpy(td->td_retval, &cts, sizeof(cts));
 	return (0);
 }
 
@@ -129,6 +129,6 @@ cloudabi_sys_clock_time_get(struct thread *td,
 	int error;
 
 	error = cloudabi_clock_time_get(td, uap->clock_id, &ts);
-	td->td_retval[0] = ts;
+	memcpy(td->td_retval, &ts, sizeof(ts));
 	return (error);
 }