diff --git a/g11n/Multibyte.php b/g11n/Multibyte.php
index dd919757d8..c3ec7da27d 100644
--- a/g11n/Multibyte.php
+++ b/g11n/Multibyte.php
@@ -34,6 +34,13 @@
  */
 class Multibyte extends \lithium\core\Adaptable {
 
+	/**
+	 * Contains adapter configurations for `Multibyte` adapters.
+	 *
+	 * @var array
+	 */
+	protected static $_configurations = array();
+
 	/**
 	 * `Libraries::locate()`-compatible path to adapters for this class.
 	 *