diff --git a/src/Potter/Cloneable/CloneableTrait.php b/src/Potter/Cloneable/CloneableTrait.php
index be589df..6a9c98a 100644
--- a/src/Potter/Cloneable/CloneableTrait.php
+++ b/src/Potter/Cloneable/CloneableTrait.php
@@ -8,8 +8,8 @@ use \League\Event\EventDispatcher as BaseDispatcher;
 
 trait CloneableTrait 
 {
-    public const string BEFORE_CLONE = 'beforeClone';
-    public const string AFTER_CLONE = 'afterClone';
+    private const string BEFORE_CLONE = 'beforeClone';
+    private const string AFTER_CLONE = 'afterClone';
     
     final public function clone(): static
     {