diff --git a/public/jsonapi.php b/public/jsonapi.php
index 4b3237082a3dfbab1c4af9659da3c9717f363b1f..1dfd51bdb450ad2521ad128383aa0aac311e48db 100644
--- a/public/jsonapi.php
+++ b/public/jsonapi.php
@@ -35,7 +35,7 @@ $app = AppFactory::create();
 $container->set(\Slim\App::class, $app);
 
 // Set the base path
-$app->setBasePath('/jsonapi.php');
+$app->setBasePath($GLOBALS['CANONICAL_RELATIVE_PATH_STUDIP'] . 'jsonapi.php');
 
 // Register middleware
 $middleware = require 'lib/classes/JsonApi/middleware.php';