diff --git a/lib/Cake/Utility/CakeTime.php b/lib/Cake/Utility/CakeTime.php
index f5e343fc60c..80bd3ddb973 100644
--- a/lib/Cake/Utility/CakeTime.php
+++ b/lib/Cake/Utility/CakeTime.php
@@ -477,7 +477,7 @@ public static function isThisWeek($dateString, $timezone = null) {
  * @link http://book.cakephp.org/2.0/en/core-libraries/helpers/time.html#testing-time
  */
 	public static function isThisMonth($dateString, $timezone = null) {
-		$date = self::fromString($dateString);
+		$date = self::fromString($dateString, $timezone);
 		return date('m Y', $date) == date('m Y', time());
 	}