diff --git a/cake/libs/multibyte.php b/cake/libs/multibyte.php
index 324c4d578..724b65923 100644
--- a/cake/libs/multibyte.php
+++ b/cake/libs/multibyte.php
@@ -966,6 +966,7 @@ class Multibyte extends Object {
 		}
 		$string = array_values($string);
 
+		$value = array();
 		for ($i = 0; $i < $length; $i++) {
 			$value[] = $string[$i];
 		}