diff --git a/Ubuntu-18.04-Root-on-ZFS.md b/Ubuntu-18.04-Root-on-ZFS.md
index 407e93e..e5819dc 100644
--- a/Ubuntu-18.04-Root-on-ZFS.md
+++ b/Ubuntu-18.04-Root-on-ZFS.md
@@ -425,6 +425,9 @@ The compression algorithm is set to `zle` because it is the cheapest available a
 
     # mkswap -f /dev/zvol/rpool/swap
     # echo /dev/zvol/rpool/swap none swap defaults 0 0 >> /etc/fstab
+    # echo RESUME=none > /etc/initramfs-tools/conf.d/resume
+
+The `RESUME=none` is necessary to disable resuming from hibernation.  This does not work, as the zvol is not present (because the pool has not yet been imported) at the time the resume script runs.  If it is not disabled, the boot process hangs for 30 seconds waiting for the swap zvol to appear.
 
 7.3  Enable the swap device: