diff --git a/deployment/data-model.nix b/deployment/data-model.nix
index f005084b..d3977535 100644
--- a/deployment/data-model.nix
+++ b/deployment/data-model.nix
@@ -31,6 +31,7 @@ let
       inputs.nixops4.modules.nixops4Deployment.default
 
       {
+        _class = "nixops4Deployment";
         _module.args = {
           resourceProviderSystem = builtins.currentSystem;
           resources = { };
@@ -40,8 +41,6 @@ let
   };
 in
 {
-  _class = "nixops4Deployment";
-
   options = {
     resources = mkOption {
       description = "Collection of deployment resources that can be required by applications and policed by hosting providers";