diff --git a/App/sims/tourismusregion/api/save_map.php b/App/sims/tourismusregion/api/save_map.php
index 127ef60..1f58fa0 100644
--- a/App/sims/tourismusregion/api/save_map.php
+++ b/App/sims/tourismusregion/api/save_map.php
@@ -14,6 +14,7 @@ require_once __DIR__ . '/../../../php/config/app.php';
 require_once __DIR__ . '/../../../php/lib/Database.php';
 require_once __DIR__ . '/../../../php/lib/Response.php';
 require_once __DIR__ . '/../../../php/lib/Session.php';
+Session::start();            // Session laden, sonst ist $_SESSION leer → requireTeacher wirft immer 401
 Session::requireTeacher();
 
 $raw = file_get_contents('php://input');