diff --git a/disk/format-chosen.sh b/disk/format-chosen.sh
index 52b88edc93..3444d41541 100644
--- a/disk/format-chosen.sh
+++ b/disk/format-chosen.sh
@@ -183,6 +183,7 @@ then
     check_command zfs set atime=off "$POOLNAME"
     check_command zfs set recordsize=128k "$POOLNAME"
     check_command zfs set logbias=latency "$POOLNAME"
+    check_command zfs set dnodesize=auto "$POOLNAME"
 
 else
     msg_box "It seems like /dev/$DEVTYPE does not exist.