diff --git a/src/etc/rc.loader.d/20-zfs b/src/etc/rc.loader.d/20-zfs
index ac08466ec..ab9fffa4f 100644
--- a/src/etc/rc.loader.d/20-zfs
+++ b/src/etc/rc.loader.d/20-zfs
@@ -1,3 +1,4 @@
+# ZFS standard environment requirements
 kern.geom.label.disk_ident.enable="0"
 kern.geom.label.gptid.enable="0"
 vfs.zfs.min_auto_ashift=12