diff --git a/lib/Configuration.php b/lib/Configuration.php
index 4f6f2f64..8633eaca 100644
--- a/lib/Configuration.php
+++ b/lib/Configuration.php
@@ -37,10 +37,8 @@ final class Configuration {
 	 * Use {@see Configuration::getConfig()} instead.
 	 *
 	 * @var array|null
-	 *
-	 * @todo Change the scope of this property to protected or private
 	 */
-	public static $config = null;
+	private static $config = null;
 
 	/**
 	 * Throw an exception when trying to create a new instance of this class.