diff --git a/README.md b/README.md
index c0a28ec..9036a36 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,3 @@
-# Wuunder opencart plugin
\ No newline at end of file
+# Wuunder opencart plugin
+
+Troubles caused by use of other ports than HTTP can be fixed but are not part of the standard implementation.
diff --git a/catalog/controller/module/wuunder.php b/catalog/controller/module/wuunder.php
index 219a6d0..0faeffb 100644
--- a/catalog/controller/module/wuunder.php
+++ b/catalog/controller/module/wuunder.php
@@ -14,9 +14,11 @@ public function webhook()
             $order_id = $_REQUEST['order'];
             $booking_token = $_REQUEST['token'];
             $data = json_decode(file_get_contents('php://input'), true);
+            if ($data['action'] === "shipment_booked") {
             $this->db->query("UPDATE `wuunder_shipment` SET label_id = '" . $this->db->escape($data['shipment']['id']) . "', label_url = '" . $this->db->escape($data['shipment']['label_url']) . "', label_tt_url = '" . $this->db->escape($data['shipment']['track_and_trace_url']) . "' WHERE order_id = " . $order_id . " AND booking_token = '" . $booking_token . "'");
             $this->load->model("checkout/order");
             $this->model_checkout_order->addOrderHistory($order_id, 3);
+           }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/vqmod/xml/orders_list.xml b/vqmod/xml/orders_list.xml
index f660f24..0ed715e 100644
--- a/vqmod/xml/orders_list.xml
+++ b/vqmod/xml/orders_list.xml
@@ -16,7 +16,7 @@
             <add><![CDATA[
                 <ul class="wuunder-icons">
                 <?php if (is_null($order['label_id'])) {
-                    if (is_null($order['booking_url']) || empty($order['booking_url)) { ?>
+                    if (is_null($order['booking_url']) || empty($order['booking_url'])) { ?>
                         <a href="<?php echo $order['generate_booking_url']; ?>" title="<?php echo $create_label; ?>"><img class="wuunder-icon" src="/admin/view/image/wuunder/create-label.png"/></a>
                     <?php } else { ?>
                         <a href="<?php echo $order['booking_url']; ?>" title="<?php echo $create_label; ?>"><img class="wuunder-icon" src="/admin/view/image/wuunder/create-label.png" /></a>
@@ -30,4 +30,4 @@
                 ]]></add>
         </operation>
     </file>
-</modification>
\ No newline at end of file
+</modification>