diff --git a/appliances/empty-vm.gns3a b/appliances/empty-vm.gns3a
index 8372460..4a43ddf 100644
--- a/appliances/empty-vm.gns3a
+++ b/appliances/empty-vm.gns3a
@@ -5,7 +5,6 @@
     "description": "An empty VM with empty hard disks 8G, 30G & 100G.",
     "vendor_name": "GNS3",
     "vendor_url": "https://gns3.com",
-    "documentation_url": "",
     "product_name": "QEMU",
     "product_url": "https://sourceforge.net/projects/gns-3/files/Empty%20Qemu%20disk/",
     "registry_version": 4,