diff --git a/flake.nix b/flake.nix
index 3371775..6a3a797 100644
--- a/flake.nix
+++ b/flake.nix
@@ -41,6 +41,33 @@
               ./modules
               agenix.nixosModules.default
             ];
+
+            infoRequired = {
+              name = lib.isString;
+              description = lib.isString;
+              id = lib.isInt;
+            };
+            verifyAttrs =
+              info:
+              let
+                missing = lib.filter (n: !(info ? ${n})) (map (i: i.name) (lib.attrsToList infoRequired));
+                wrongType = lib.filter (n: info ? ${n.name} && !(n.value info.${n.name})) (
+                  lib.attrsToList infoRequired
+                );
+              in
+              (lib.warnIf (
+                lib.length missing > 0
+              ) "${info.name}/info.nix : les attributs « ${lib.join ", " missing} » sont manquants")
+                (lib.warnIf (lib.length wrongType > 0)
+                  "${info.name}/info.nix : les attributs « ${
+                    lib.join ", " (map (i: i.name) wrongType)
+                  } » sont mal typés"
+                )
+                (lib.warnIfNot (
+                  (info.isDebian or false) || info ? enable
+                ) "${info.name}/info.nix : cette machine nix ne définit pas l’attribut enable")
+                info;
+
             get_hosts_names =
               path: attrNames (attrsets.filterAttrs (name: type: type == "directory") (readDir path));
             get_info =
@@ -51,12 +78,16 @@
                   let
                     filePath = path + "/${name}/info.nix";
                   in
-                  if builtins.pathExists filePath then import filePath else warn "${toString filePath} not found" null
+                  if builtins.pathExists filePath then
+                    verifyAttrs (import filePath)
+                  else
+                    warn "${toString filePath} not found" null
                 ) (get_hosts_names path)
               );
 
             listInfoToAttrs =
               infos: add: listToAttrs (map (info: lib.nameValuePair info.name (info // add)) infos);
+
             attrsToNixosSystem =
               path: all_hosts: hosts:
               mapAttrs (
@@ -72,6 +103,7 @@
                   ++ baseModules;
                 }
               ) (attrsets.filterAttrs (name: info: !(info.isDebian or false)) hosts);
+
             attrs_vm_info = listInfoToAttrs (get_info ./hosts/vm) { isVm = true; };
             attrs_physique_info = listInfoToAttrs (get_info ./hosts/physiques) { isVm = false; };
             attrs_all_info = attrs_physique_info // attrs_vm_info;
diff --git a/hosts/physiques/zamok/info.nix b/hosts/physiques/zamok/info.nix
index ce45c1b..3237c2d 100644
--- a/hosts/physiques/zamok/info.nix
+++ b/hosts/physiques/zamok/info.nix
@@ -15,7 +15,7 @@
       arceus = 4;
     };
   };
-  
+
   ilo = {
     id = 54;
     switch.salameche = 14;