diff --git a/Debian-Stretch-Root-on-ZFS.md b/Debian-Stretch-Root-on-ZFS.md
index 36458fc..751dc48 100644
--- a/Debian-Stretch-Root-on-ZFS.md
+++ b/Debian-Stretch-Root-on-ZFS.md
@@ -121,9 +121,16 @@ Properties are inherited, if you want to create (for example) `rpool/var/lib` yo
     # zfs create                                            rpool/var/spool
     # zfs create -o com.sun:auto-snapshot=false -o exec=on  rpool/var/tmp
 
+    If you use /opt on this system:
+    # zfs create                                            rpool/opt
+
     If you use /srv on this system:
     # zfs create                                            rpool/srv
 
+    If you use /usr/local on this system:
+    # zfs create -o canmount=off                            rpool/usr
+    # zfs create                                            rpool/usr/local
+
     If this system will have games installed:
     # zfs create                                            rpool/var/games
 
diff --git a/Ubuntu-18.04-Root-on-ZFS.md b/Ubuntu-18.04-Root-on-ZFS.md
index 965635c..a00f236 100644
--- a/Ubuntu-18.04-Root-on-ZFS.md
+++ b/Ubuntu-18.04-Root-on-ZFS.md
@@ -142,9 +142,16 @@ With ZFS, it is not normally necessary to use a mount command (either `mount` or
     # zfs create                                            rpool/var/spool
     # zfs create -o com.sun:auto-snapshot=false -o exec=on  rpool/var/tmp
 
+    If you use /opt on this system:
+    # zfs create                                            rpool/opt
+
     If you use /srv on this system:
     # zfs create                                            rpool/srv
 
+    If you use /usr/local on this system:
+    # zfs create -o canmount=off                            rpool/usr
+    # zfs create                                            rpool/usr/local
+
     If this system will have games installed:
     # zfs create                                            rpool/var/games