diff --git a/src/Symfony/Component/Cache/Traits/AbstractTrait.php b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
index 375ccf7620d83..7b1932c4ceeb2 100644
--- a/src/Symfony/Component/Cache/Traits/AbstractTrait.php
+++ b/src/Symfony/Component/Cache/Traits/AbstractTrait.php
@@ -23,7 +23,7 @@ trait AbstractTrait
 {
     use LoggerAwareTrait;
 
-    private $namespace;
+    protected $namespace;
     private $deferred = array();
 
     /**
@@ -185,7 +185,7 @@ protected static function unserialize($value)
         }
     }
 
-    private function getId($key)
+    protected function getId($key)
     {
         CacheItem::validateKey($key);