diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 1afbb481b713..5e5e4a20a67f 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3792,7 +3792,8 @@ void rt_mutex_setprio(struct task_struct *p, int prio)
 	if (dl_prio(prio)) {
 		struct task_struct *pi_task = rt_mutex_get_top_task(p);
 		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