diff --git a/server/services/unterkunft/speicher.js b/server/services/unterkunft/speicher.js
index c402c23..abb59e8 100644
--- a/server/services/unterkunft/speicher.js
+++ b/server/services/unterkunft/speicher.js
@@ -42,7 +42,7 @@ function schreiben(name, felder) {
 const nichtGefunden = (err) => err?.status === 404 && err.type !== 'collection_not_found' && err.type !== 'database_not_found'
 
 /** Dokument-IDs landen roh im URL-Pfad: nur harmlose Zeichen durchlassen. */
-export const ID_RE = /^[A-Za-z0-9_]{1,36}$/
+export const ID_RE = /^[A-Za-z0-9_-]{1,36}$/
 
 async function ladeDok(name, id) {
   if (typeof id !== 'string' || !ID_RE.test(id)) return null