diff --git a/hosts/nullbox/hardware-configuration.nix b/hosts/nullbox/hardware-configuration.nix
index cfe6704..f2754ad 100644
--- a/hosts/nullbox/hardware-configuration.nix
+++ b/hosts/nullbox/hardware-configuration.nix
@@ -33,7 +33,7 @@
   fileSystems."/.btrfsroot" =
     { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
       fsType = "btrfs";
-      options = [ "subvolume=/" ];
+      options = [ "subvol=/" ];
     };
 
   swapDevices = [ ];