diff --git a/FAQ.md b/FAQ.md
index 5f0bb77..3458372 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -94,4 +94,5 @@ echo '<pre>PHP version used: ', PHP_VERSION, PHP_EOL,
     'extension com_dotnet is loaded: ',
     (extension_loaded('com_dotnet') ? 'true' : 'false'), '</pre>';
 ```
-If all these checks fail, you need to either: upgrade to PHP 7, install libsodium, add `/dev/urandom` to your `open_basedir` setting, install mcrypt or install com_dotnet.
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+
+If all these checks fail, you need to either: upgrade to PHP 7, [install libsodium](https://paragonie.com/book/pecl-libsodium/read/00-intro.md#installing-libsodium), add `/dev/urandom` to your `open_basedir` setting, install mcrypt (which also needs access to `dev/urandom`, so `open_basedir` must also be set) or install com_dotnet.
\ No newline at end of file