diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c
index 458912a504d..1b1e52b06bd 100644
--- a/sys/kern/kern_exit.c
+++ b/sys/kern/kern_exit.c
@@ -355,7 +355,6 @@ exit1(struct thread *td, int rval, int signo)
 	 */
 	PROC_LOCK(p);
 	stopprofclock(p);
-	p->p_flag &= ~(P_TRACED | P_PPWAIT | P_PPTRACE);
 	p->p_ptevents = 0;
 
 	/*
@@ -458,6 +457,9 @@ exit1(struct thread *td, int rval, int signo)
 	sx_xunlock(&allproc_lock);
 
 	sx_xlock(&proctree_lock);
+	PROC_LOCK(p);
+	p->p_flag &= ~(P_TRACED | P_PPWAIT | P_PPTRACE);
+	PROC_UNLOCK(p);
 
 	/*
 	 * Reparent all children processes: