diff --git a/hosts/nullbox/configuration.nix b/hosts/nullbox/configuration.nix
index f5d48a6..8dab31c 100644
--- a/hosts/nullbox/configuration.nix
+++ b/hosts/nullbox/configuration.nix
@@ -25,7 +25,7 @@
         };
       }
 
-      (lib.genAttrs [ "/.btrfsroot" "/" "/home" ] ( fs: {
+      (lib.genAttrs [ "/.btrfsroot" "/" "/home" "/nix" ] ( fs: {
         options = [ "compress=zstd" ];
       }))
     ];
diff --git a/hosts/nullbox/hardware-configuration.nix b/hosts/nullbox/hardware-configuration.nix
index 811ee63..d84ff0e 100644
--- a/hosts/nullbox/hardware-configuration.nix
+++ b/hosts/nullbox/hardware-configuration.nix
@@ -19,6 +19,12 @@
       options = [ "subvol=nixos/@root" ];
     };
 
+  fileSystems."/nix" =
+    { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
+      fsType = "btrfs";
+      options = [ "subvol=nixos/@nix" ];
+    };
+
   fileSystems."/.btrfsroot" =
     { device = "/dev/disk/by-uuid/e36d1ab4-d18b-434e-80b5-0efca0652eb5";
       fsType = "btrfs";