diff --git a/kernel/sched_idletask.c b/kernel/sched_idletask.c
index 9f4c28f..3503fb2 100644
--- a/kernel/sched_idletask.c
+++ b/kernel/sched_idletask.c
@@ -33,7 +33,7 @@
 	spin_lock_irq(&rq->lock);
 }
 
-static void put_prev_task_idle(struct rq *rq, struct task_struct *prev, u64 now)
+static void put_prev_task_idle(struct rq *rq, struct task_struct *prev)
 {
 }