diff --git a/distribution/openrct2.d.ts b/distribution/openrct2.d.ts
index 05447e94b7..bd1f2caf39 100644
--- a/distribution/openrct2.d.ts
+++ b/distribution/openrct2.d.ts
@@ -1658,7 +1658,7 @@ declare global {
          * This may have trailing spaces if the name is shorter than 8 characters.
          * Only .DAT objects or JSON objects based on .DAT objects will have legacy identifiers.
          */
-        readonly legacyIdentifier: string;
+        readonly legacyIdentifier: string | null;
 
         /**
          * The object version, e.g. "1.5.2-pre".
diff --git a/src/openrct2/scripting/bindings/object/ScInstalledObject.hpp b/src/openrct2/scripting/bindings/object/ScInstalledObject.hpp
index f722280a38..39b652fade 100644
--- a/src/openrct2/scripting/bindings/object/ScInstalledObject.hpp
+++ b/src/openrct2/scripting/bindings/object/ScInstalledObject.hpp
@@ -145,17 +145,18 @@ namespace OpenRCT2::Scripting
             return {};
         }
 
-        std::string legacyIdentifier_get() const
+        DukValue legacyIdentifier_get() const
         {
+            auto ctx = GetContext()->GetScriptEngine().GetContext();
             auto installedObject = GetInstalledObject();
             if (installedObject != nullptr)
             {
                 if (!installedObject->ObjectEntry.IsEmpty())
                 {
-                    return std::string(installedObject->ObjectEntry.GetName());
+                    return ToDuk(ctx, installedObject->ObjectEntry.GetName());
                 }
             }
-            return {};
+            return ToDuk(ctx, nullptr);
         }
 
         std::vector<std::string> authors_get() const