diff --git a/modules/hosts/hermes/disko.nix b/modules/hosts/hermes/disko.nix
index ab1004e..b446e20 100644
--- a/modules/hosts/hermes/disko.nix
+++ b/modules/hosts/hermes/disko.nix
@@ -70,7 +70,7 @@
             canmount = "noauto";
             mountpoint = "legacy";
           };
-          postCreateHook = "zfs snapshot rpool/root/nixos@blank";
+          postCreateHook = "zfs list -t snapshot -H -o name | grep -E '^zroot@blank$' || zfs snapshot zroot@blank";
         };
 
         home = {