diff --git a/hosts/alto/default.nix b/hosts/alto/default.nix
index d9906b1..f907d41 100644
--- a/hosts/alto/default.nix
+++ b/hosts/alto/default.nix
@@ -2,6 +2,11 @@
 {
   system.stateVersion = "24.11";
 
+  meta = {
+    domains.assertUnique = true;
+    ports.assertUnique = true;
+  };
+
   custom = {
     sops.enable = true;
     boot.loader.systemdBoot.enable = true;
diff --git a/hosts/cirrus/default.nix b/hosts/cirrus/default.nix
index 83b5fd6..1400119 100644
--- a/hosts/cirrus/default.nix
+++ b/hosts/cirrus/default.nix
@@ -2,6 +2,11 @@
 {
   system.stateVersion = "24.11";
 
+  meta = {
+    domains.assertUnique = true;
+    ports.assertUnique = true;
+  };
+
   custom = {
     sops.enable = true;
     boot.loader.grub.enable = true;
diff --git a/hosts/cumulus/default.nix b/hosts/cumulus/default.nix
index b735e64..9f9a473 100644
--- a/hosts/cumulus/default.nix
+++ b/hosts/cumulus/default.nix
@@ -2,6 +2,11 @@
 {
   system.stateVersion = "24.11";
 
+  meta = {
+    domains.assertUnique = true;
+    ports.assertUnique = true;
+  };
+
   custom = {
     sops.enable = true;
     boot.loader.grub.enable = true;
diff --git a/modules/system/meta/domains.nix b/modules/system/meta/domains.nix
index 1b6e928..516ed77 100644
--- a/modules/system/meta/domains.nix
+++ b/modules/system/meta/domains.nix
@@ -21,9 +21,7 @@ in
         |> lib.concatLists;
       readOnly = true;
     };
-    assertUnique = lib.mkEnableOption "" // {
-      default = true;
-    };
+    assertUnique = lib.mkEnableOption "";
   };
 
   config = lib.mkIf cfg.assertUnique {
diff --git a/modules/system/meta/ports.nix b/modules/system/meta/ports.nix
index 33ab60c..37a99e6 100644
--- a/modules/system/meta/ports.nix
+++ b/modules/system/meta/ports.nix
@@ -13,9 +13,7 @@ in
       type = lib.types.listOf lib.types.port;
       default = [ ];
     };
-    assertUnique = lib.mkEnableOption "" // {
-      default = true;
-    };
+    assertUnique = lib.mkEnableOption "";
   };
 
   config = lib.mkIf cfg.assertUnique {