diff --git a/Installing-PHPCI.md b/Installing-PHPCI.md
index 86c19e8..29ef001 100644
--- a/Installing-PHPCI.md
+++ b/Installing-PHPCI.md
@@ -38,7 +38,7 @@ location / {
 
 You can use the built-in PHP server `php -S localhost:8080` by adding `public/routing.php`.
 
-```
+```php
 <?php
 
 if (file_exists(__DIR__ . '/' . $_SERVER['REQUEST_URI'])) {