diff --git a/nagios/etc/35_btrfs-checks.cfg b/nagios/etc/35_btrfs-checks.cfg
index aa2b03c..3bc8c10 100644
--- a/nagios/etc/35_btrfs-checks.cfg
+++ b/nagios/etc/35_btrfs-checks.cfg
@@ -1 +1,5 @@
+# Lines to add to /etc/sudoers.d/nagios :
+#  nagios ALL=(ALL) NOPASSWD: /usr/local/share/scripts-admin/nagios/check_btrfs.sh
+#  nagios ALL=(ALL) NOPASSWD: /usr/local/share/scripts-admin/nagios/check_btrfs_quota.sh
+#command[check_btrfs]=sudo /usr/local/share/scripts-admin/nagios/check_btrfs.sh -V /srv
 command[check_btrfs_quota]=sudo /usr/local/share/scripts-admin/nagios/check_btrfs_quota.sh -w 30% -c 10% -V /srv