diff --git a/sys/kern/vfs_mount.c b/sys/kern/vfs_mount.c
index b2b4969975cd..09fa7ed071bf 100644
--- a/sys/kern/vfs_mount.c
+++ b/sys/kern/vfs_mount.c
@@ -888,12 +888,18 @@ vfs_domount_update(
 
 	ASSERT_VOP_ELOCKED(vp, __func__);
 	KASSERT((fsflags & MNT_UPDATE) != 0, ("MNT_UPDATE should be here"));
+	mp = vp->v_mount;
 
 	if ((vp->v_vflag & VV_ROOT) == 0) {
+		if (vfs_copyopt(*optlist, "export", &export, sizeof(export))
+		    == 0)
+			error = EXDEV;
+		else
+			error = EINVAL;
 		vput(vp);
-		return (EINVAL);
+		return (error);
 	}
-	mp = vp->v_mount;
+
 	/*
 	 * We only allow the filesystem to be reloaded if it
 	 * is currently mounted read-only.
diff --git a/usr.sbin/mountd/mountd.c b/usr.sbin/mountd/mountd.c
index 87794c3ce6db..ad1964e07635 100644
--- a/usr.sbin/mountd/mountd.c
+++ b/usr.sbin/mountd/mountd.c
@@ -1747,8 +1747,12 @@ get_exportlist(void)
 		iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
 		errmsg[0] = '\0';
 
+		/*
+		 * EXDEV is returned when path exists but is not a
+		 * mount point.  May happens if raced with unmount.
+		 */
 		if (nmount(iov, iovlen, fsp->f_flags) < 0 &&
-		    errno != ENOENT && errno != ENOTSUP) {
+		    errno != ENOENT && errno != ENOTSUP && errno != EXDEV) {
 			syslog(LOG_ERR,
 			    "can't delete exports for %s: %m %s",
 			    fsp->f_mntonname, errmsg);