diff --git a/libraries/src/Event/Model/AfterCleanCacheEvent.php b/libraries/src/Event/Model/AfterCleanCacheEvent.php
index 59997c120c458..26e66461a14c3 100644
--- a/libraries/src/Event/Model/AfterCleanCacheEvent.php
+++ b/libraries/src/Event/Model/AfterCleanCacheEvent.php
@@ -10,7 +10,6 @@
 namespace Joomla\CMS\Event\Model;
 
 use Joomla\CMS\Event\AbstractImmutableEvent;
-use Joomla\CMS\Event\ReshapeArgumentsAware;
 
 // phpcs:disable PSR1.Files.SideEffects
 \defined('_JEXEC') or die;
@@ -23,18 +22,6 @@
  */
 class AfterCleanCacheEvent extends AbstractImmutableEvent
 {
-    use ReshapeArgumentsAware;
-
-    /**
-     * The argument names, in order expected by legacy plugins.
-     *
-     * @var array
-     *
-     * @since  5.0.0
-     * @deprecated 5.0 will be removed in 7.0
-     */
-    protected $legacyArgumentsOrder = ['defaultgroup', 'cachebase', 'result'];
-
     /**
      * Constructor.
      *
@@ -47,11 +34,6 @@ class AfterCleanCacheEvent extends AbstractImmutableEvent
      */
     public function __construct($name, array $arguments = [])
     {
-        // Reshape the arguments array to preserve b/c with legacy listeners
-        if ($this->legacyArgumentsOrder) {
-            $arguments = $this->reshapeArguments($arguments, $this->legacyArgumentsOrder);
-        }
-
         parent::__construct($name, $arguments);
 
         if (!\array_key_exists('defaultgroup', $this->arguments)) {