diff --git a/storage/storagedriver/zfs-driver.md b/storage/storagedriver/zfs-driver.md
index a439d897d1..492cc351f5 100644
--- a/storage/storagedriver/zfs-driver.md
+++ b/storage/storagedriver/zfs-driver.md
@@ -20,7 +20,7 @@ The ZFS on Linux (ZoL) port is healthy and maturing. However, at this point in
 time it is not recommended to use the `zfs` Docker storage driver for production
 use unless you have substantial experience with ZFS on Linux.
 
-> **Note**: There is also a FUSE implementation of ZFS on the Linux platform.
+> ***Note***: There is also a FUSE implementation of ZFS on the Linux platform.
 > This is not recommended. The native ZFS driver (ZoL) is more tested, more
 > performant, and is more widely used. The remainder  of this document refers
 > to the native ZoL port.
@@ -44,6 +44,11 @@ use unless you have substantial experience with ZFS on Linux.
   and push existing images to Docker Hub or a private repository, so that you
   do not need to re-create them later.
 
+> ***NOTE:*** There is no need to use `MountFlags=slave` with Docker Engine 18.09 because `dockerd` 
+> and `containerd` end up in different mount namespaces, and `containerd` cannot see those mounts.
+> This is resulting from Docker Engine no longer starting `containerd` as a service, but relying 
+> on `systemd` to start the `containerd` service.
+
 ## Configure Docker with the `zfs` storage driver
 
 1.  Stop Docker.