diff --git a/libraries/legacy/error/error.php b/libraries/legacy/error/error.php
index 0f786b2644b73..8339f9bc29e0b 100644
--- a/libraries/legacy/error/error.php
+++ b/libraries/legacy/error/error.php
@@ -784,14 +784,14 @@ public static function handleCallback(&$error, $options)
 	/**
 	 * Display a custom error page and exit gracefully
 	 *
-	 * @param   JException  &$error  Exception object
+	 * @param   JException  $error  Exception object
 	 *
 	 * @return  void
 	 *
 	 * @deprecated  12.1
 	 * @since   11.1
 	 */
-	public static function customErrorPage(&$error)
+	public static function customErrorPage($error)
 	{
 		JLog::add('JError::customErrorPage() is deprecated, use JErrorPage::render() instead.', JLog::WARNING, 'deprecated');
 
diff --git a/plugins/system/redirect/redirect.php b/plugins/system/redirect/redirect.php
index 9403a261e11ad..e29451901fd6c 100644
--- a/plugins/system/redirect/redirect.php
+++ b/plugins/system/redirect/redirect.php
@@ -56,13 +56,13 @@ public function __construct(&$subject, $config)
 	/**
 	 * Method to handle an error condition from JError.
 	 *
-	 * @param   JException  &$error  The JException object to be handled.
+	 * @param   JException  $error  The JException object to be handled.
 	 *
 	 * @return  void
 	 *
 	 * @since   1.6
 	 */
-	public static function handleError(JException &$error)
+	public static function handleError(JException $error)
 	{
 		self::doErrorHandling($error);
 	}