diff --git a/src/Controller/MainController.php b/src/Controller/MainController.php
index a59ac40..152c7fc 100644
--- a/src/Controller/MainController.php
+++ b/src/Controller/MainController.php
@@ -32,7 +32,7 @@ final class MainController extends AbstractController
         // ---------------------------------------------- Get file contents ---
 
         $fullPath = sprintf(
-            '%s/var/data/%s',
+            '%s/var/data/%s.md',
             $this->getParameter('kernel.project_dir'),
             $path,
         );