diff --git a/UPGRADE-3.x.md b/UPGRADE-3.x.md
index ffe2c691a6..4b576e0c81 100644
--- a/UPGRADE-3.x.md
+++ b/UPGRADE-3.x.md
@@ -6,7 +6,7 @@ UPGRADE FROM 3.x to 3.x
 
 ### Changes in templates registry stucture.
 
-`Sonata\AdminBundle\Templating\TemplateRegistry` was split to:
+The `Sonata\AdminBundle\Templating\TemplateRegistry` class has been splitted into 3 classes:
    - `TemplateRegistry` based on `Sonata\AdminBundle\Templating\TemplateRegistryInterface`
    - `MutableTemplateRegistry` based on `Sonata\AdminBundle\Templating\MutableTemplateRegistryInterface`
    - `AbstractTemplateRegistry` if you want create your own template registry