diff --git a/sched/timer.c b/sched/timer.c
index e0d60c3..833d8ed 100644
--- a/sched/timer.c
+++ b/sched/timer.c
@@ -15,6 +15,8 @@ static void timeout_expiry(struct timer *timer)
 	rq_lock(rq, &flags);
 	rq_enqueue(rq, thread);
 	rq_unlock(rq, flags);
+
+	put_cpu(cpu);
 }
 
 void add_timer(struct timer *timer)