diff --git a/Requirements.md b/Requirements.md
index f8884a2..83dcaa3 100644
--- a/Requirements.md
+++ b/Requirements.md
@@ -2,7 +2,7 @@
 
   - PHP 5.6 (or higher) => (Read [this](RSS-Bridge-on-PHP-5.4) for PHP 5.4)
   - `openssl` extension
-  - `libxml` extension
+  - `libxml` extension (enabled by default, see [PHP Manual](http://php.net/manual/en/libxml.installation.php))
   - `allow_url_fopen` enabled (`On` or `1`)
 
 Enable extensions by un-commenting the corresponding line in your PHP configuration (`php.ini`).