diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index e885be1e8a11..02824a5c2693 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -589,6 +589,7 @@ SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
 			goto out;
 		}
 	} else {
+		memset(&event.sigev_value, 0, sizeof(event.sigev_value));
 		event.sigev_notify = SIGEV_SIGNAL;
 		event.sigev_signo = SIGALRM;
 		event.sigev_value.sival_int = new_timer->it_id;