diff --git a/src/Settings.php b/src/Settings.php
index 2d6d84b..fa042db 100644
--- a/src/Settings.php
+++ b/src/Settings.php
@@ -80,6 +80,6 @@ class Settings
      */
     public function listSettings(): array
     {
-        return array_keys(get_class_vars(Settings::class));
+        return get_object_vars($this);
     }
 }