diff --git a/studio/host/app/src/options.cpp b/studio/host/app/src/options.cpp
index fad57f9..b59ff4d 100644
--- a/studio/host/app/src/options.cpp
+++ b/studio/host/app/src/options.cpp
@@ -66,7 +66,7 @@ ParsedOptions parse_options(std::span<const std::string_view> args)
     for (std::size_t i = 0; i < args.size(); ++i) {
         const std::string_view arg = args[i];
         const bool has_value = i + 1 < args.size();
-        const auto fail = [](std::string message) { return ParsedOptions{std::nullopt, std::move(message)}; };
+        const auto fail = [](std::string message) { return ParsedOptions{.options=std::nullopt, .error=std::move(message)}; };
         if (arg == "--help" || arg == "-h") {
             options.help = true;
         } else if (arg == "--detach-core") {
@@ -101,9 +101,9 @@ ParsedOptions parse_options(std::span<const std::string_view> args)
         }
     }
     if (options.core_port == options.ui_port) {
-        return {std::nullopt, "Le Core et l'interface ne peuvent pas partager le même port."};
+        return {.options=std::nullopt, .error="Le Core et l'interface ne peuvent pas partager le même port."};
     }
-    return {options, {}};
+    return {.options=options, .error={}};
 }
 
 std::optional<std::filesystem::path> find_core_exe(const std::filesystem::path& exe_dir)
@@ -124,7 +124,8 @@ std::optional<std::filesystem::path> find_ui_dir(const std::filesystem::path& ex
 {
     for (std::filesystem::path dir = exe_dir; dir.has_parent_path() && dir != dir.parent_path();
          dir = dir.parent_path()) {
-        const auto candidate = dir / "studio" / "ui" / "dist";
+        // const auto candidate = dir / "studio" / "ui" / "dist";
+        auto candidate = dir / "studio" / "ui" / "dist";
         if (is_file(candidate / "index.html")) {
             return candidate;
         }
diff --git a/studio/host/app/src/studio_host.cpp b/studio/host/app/src/studio_host.cpp
index 5fa63e2..001f687 100644
--- a/studio/host/app/src/studio_host.cpp
+++ b/studio/host/app/src/studio_host.cpp
@@ -55,7 +55,9 @@ std::string StudioHost::core_url() const
 RequestResult StudioHost::request(const std::string& type, const json& payload, std::chrono::milliseconds timeout)
 {
     if (!client_) {
-        return {std::nullopt, Error{ErrorCode::NotConnected, "Pas de connexion au Core.", {}, 0}};
+        return {.value=std::nullopt,
+            .error = Error{.code=ErrorCode::NotConnected,.message= "Pas de connexion au Core.", .server_code={}, .close_code= 0}
+        };
     }
     return client_->request(type, payload, timeout);
 }
diff --git a/studio/host/client/include/sequa/studio/host/client.hpp b/studio/host/client/include/sequa/studio/host/client.hpp
index 9faac22..268f128 100644
--- a/studio/host/client/include/sequa/studio/host/client.hpp
+++ b/studio/host/client/include/sequa/studio/host/client.hpp
@@ -32,7 +32,7 @@ struct Welcome {
 };
 
 // Catégorie d'erreur renvoyée par le client.
-enum class ErrorCode {
+enum class ErrorCode : std::uint8_t {
     NotConnected,       // aucune connexion ouverte au moment de la requête
     Timeout,            // délai dépassé (connexion ou réponse)
     ConnectFailed,      // connexion réseau impossible (hôte/port injoignable)