diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index bedda18f37a5708b58f8eacc9d9d4043d9be889e..290cf770b71252675b4756a8e5af15f10d1939fa 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -904,7 +904,7 @@ static void yield_task_fair(struct rq *rq)
 	/*
 	 * Already in the rightmost position?
 	 */
-	if (unlikely(rightmost->vruntime < se->vruntime))
+	if (unlikely(!rightmost || rightmost->vruntime < se->vruntime))
 		return;
 
 	/*