diff --git a/doc/00-intro.md b/doc/00-intro.md
index 714b55be0..9040cf0c6 100644
--- a/doc/00-intro.md
+++ b/doc/00-intro.md
@@ -179,7 +179,7 @@ downloads. To use it, just add the following line to your code's bootstrap
 process:
 
 ```php
-require 'vendor/autoload.php';
+require __DIR__ . '/vendor/autoload.php';
 ```
 
 Woah! Now start using monolog! To keep learning more about Composer, keep