diff --git a/appliances/exos.gns3a b/appliances/exos.gns3a
index 52cfca5..5d254b0 100644
--- a/appliances/exos.gns3a
+++ b/appliances/exos.gns3a
@@ -13,7 +13,7 @@
     "maintainer_email": "developers@gns3.net",
     "usage": "You can change the console to telnet after install. Default user: admin (no password set)",
     "first_port_name": "Management",
-    "port_name_format": "{port1}",
+    "port_name_format": "Port{port1}",
     "qemu": {
         "adapter_type": "virtio-net-pci",
         "adapters": 13,