diff --git a/lib/libc/sys/procctl.2 b/lib/libc/sys/procctl.2
index 76a3cef1bfb4..dc000939d6a7 100644
--- a/lib/libc/sys/procctl.2
+++ b/lib/libc/sys/procctl.2
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 29, 2014
+.Dd August 21, 2015
 .Dt PROCCTL 2
 .Os
 .Sh NAME
@@ -148,7 +148,11 @@ The specified process is the root of the reaper tree, i.e.
 .Pp
 The
 .Fa rs_children
-field returns the number of children of the reaper.
+field returns the number of children of the reaper among the descendands.
+It is possible to have a child which reaper is not the specified process,
+since the reaper for the existing children is not reset on the
+.Dv PROC_REAP_ACQUIRE
+operation.
 The
 .Fa rs_descendants
 field returns the total number of descendants of the reaper(s),
diff --git a/sys/kern/kern_procctl.c b/sys/kern/kern_procctl.c
index d65ba5a14341..8ef72901632e 100644
--- a/sys/kern/kern_procctl.c
+++ b/sys/kern/kern_procctl.c
@@ -187,8 +187,6 @@ reap_status(struct thread *td, struct proc *p,
 		}
 	} else {
 		rs->rs_pid = -1;
-		KASSERT(LIST_EMPTY(&reap->p_reaplist), ("reap children list"));
-		KASSERT(LIST_EMPTY(&reap->p_children), ("children list"));
 	}
 	return (0);
 }