diff --git a/src/BusProNet/XmlLoader/TravelXmlLoader.php b/src/BusProNet/XmlLoader/TravelXmlLoader.php
index 7060713..800a9b6 100644
--- a/src/BusProNet/XmlLoader/TravelXmlLoader.php
+++ b/src/BusProNet/XmlLoader/TravelXmlLoader.php
@@ -230,6 +230,10 @@ class TravelXmlLoader extends AbstractXmlLoader
 
     public function getRooms(\SimpleXMLElement $xml): array
     {
+        if (false === isset($xml->zimmer)) {
+            return [];
+        }
+
         $rooms = [];
 
         foreach ($xml->zimmer->preis as $item) {