diff --git a/src/citron/updater/updater_dialog.h b/src/citron/updater/updater_dialog.h
index 3f02ee556..2ea96a822 100644
--- a/src/citron/updater/updater_dialog.h
+++ b/src/citron/updater/updater_dialog.h
@@ -18,7 +18,19 @@
 // Forward declarations for non-Windows platforms
 namespace Updater {
 struct UpdateInfo;
-class UpdaterService;
+class UpdaterService {
+public:
+    enum class UpdateResult {
+        Success,
+        Failed,
+        Cancelled,
+        NetworkError,
+        ExtractionError,
+        PermissionError,
+        InvalidArchive,
+        NoUpdateAvailable
+    };
+};
 }
 #endif