diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9eeac94224db240a10fc92e4ddddbea493211406..c1ba2e569fc9215d8b4116e0b80c5504cd509fe0 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4533,7 +4533,8 @@ void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task)
 	 */
 	if (dl_prio(prio)) {
 		if (!dl_prio(p->normal_prio) ||
-		    (pi_task && dl_entity_preempt(&pi_task->dl, &p->dl))) {
+		    (pi_task && dl_prio(pi_task->prio) &&
+		     dl_entity_preempt(&pi_task->dl, &p->dl))) {
 			p->dl.dl_boosted = 1;
 			queue_flag |= ENQUEUE_REPLENISH;
 		} else