diff --git a/sys/ia64/ia64/trap.c b/sys/ia64/ia64/trap.c
index edb8767c3531..b49c0b6604a3 100644
--- a/sys/ia64/ia64/trap.c
+++ b/sys/ia64/ia64/trap.c
@@ -90,7 +90,7 @@ userret(register struct proc *p, struct trapframe *frame, u_quad_t oticks)
 		postsig(sig);
 
 	mtx_lock_spin(&sched_lock);
-	PROC_UNLOCK_NOSWITCH();
+	PROC_UNLOCK_NOSWITCH(p);
 	p->p_pri.pri_level = p->p_pri.pri_user;
 	if (resched_wanted(p)) {
 		/*