diff --git a/src/wp-includes/locale.php b/src/wp-includes/locale.php
index 0def2765a1..73f282c300 100644
--- a/src/wp-includes/locale.php
+++ b/src/wp-includes/locale.php
@@ -84,6 +84,11 @@ class WP_Locale {
 	 */
 	var $text_direction = 'ltr';
 
+	/**
+	 * @var array
+	 */
+	var $number_format;
+	
 	/**
 	 * Sets up the translated strings and object properties.
 	 *