diff --git a/src/I18n/TranslatorRegistry.php b/src/I18n/TranslatorRegistry.php
index 5be1b715706..cc8f139e2c3 100644
--- a/src/I18n/TranslatorRegistry.php
+++ b/src/I18n/TranslatorRegistry.php
@@ -36,7 +36,7 @@ class TranslatorRegistry extends TranslatorLocator
      *
      * @var array
      */
-    public $_loaders;
+    protected $_loaders;
 
     /**
      * Fallback loader name