diff --git a/server/lib/settings.ts b/server/lib/settings.ts
index 47e49d75..3b82fdde 100644
--- a/server/lib/settings.ts
+++ b/server/lib/settings.ts
@@ -506,7 +506,7 @@ function initThemingSettings ({ registerSetting }: RegisterServerOptions): void
     private: true,
     options: [
       { value: 'sepia', label: loc('avatar_set_option_sepia') },
-      { value: 'NCTV', label: loc('avatar_set_option_nctv') },
+      { value: 'nctv', label: loc('avatar_set_option_nctv') },
       { value: 'cat', label: loc('avatar_set_option_cat') },
       { value: 'bird', label: loc('avatar_set_option_bird') },
       { value: 'fenec', label: loc('avatar_set_option_fenec') },