diff --git a/LICENSE b/LICENSE
index a677f437..9e936ec0 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2019 Fabien Potencier
+Copyright (c) 2004-2020 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/MessageCatalogue.php b/MessageCatalogue.php
index 1dc50ea0..3c0f41ad 100644
--- a/MessageCatalogue.php
+++ b/MessageCatalogue.php
@@ -156,7 +156,9 @@ public function add($messages, $domain = 'messages')
         if (!isset($this->messages[$domain])) {
             $this->messages[$domain] = $messages;
         } else {
-            $this->messages[$domain] = array_replace($this->messages[$domain], $messages);
+            foreach ($messages as $id => $message) {
+                $this->messages[$domain][$id] = $message;
+            }
         }
     }
 
diff --git a/README.md b/README.md
index 46f3d1f2..e80a70ca 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ The Translation component provides tools to internationalize your application.
 Resources
 ---------
 
-  * [Documentation](https://symfony.com/doc/current/components/translation/index.html)
+  * [Documentation](https://symfony.com/doc/current/components/translation.html)
   * [Contributing](https://symfony.com/doc/current/contributing/index.html)
   * [Report issues](https://github.com/symfony/symfony/issues) and
     [send Pull Requests](https://github.com/symfony/symfony/pulls)