diff --git a/framework/yii/helpers/BaseSecurity.php b/framework/yii/helpers/BaseSecurity.php
index ca42d37..a1b0ec4 100644
--- a/framework/yii/helpers/BaseSecurity.php
+++ b/framework/yii/helpers/BaseSecurity.php
@@ -117,7 +117,6 @@ class BaseSecurity
 	* Derives a key from the given password (PBKDF2).
 	* @param string $password the source password
 	* @param string $salt the random salt
-	* @param int $iterations the number of iterations
 	* @return string the derived key
 	*/
 	protected static function deriveKey($password, $salt)