diff --git a/website/source/docs/providers/cloudstack/r/vpc.html.markdown b/website/source/docs/providers/cloudstack/r/vpc.html.markdown
index 4610feb0d..e1c4c6209 100644
--- a/website/source/docs/providers/cloudstack/r/vpc.html.markdown
+++ b/website/source/docs/providers/cloudstack/r/vpc.html.markdown
@@ -37,6 +37,9 @@ The following arguments are supported:
 * `vpc_offering` - (Required) The name or ID of the VPC offering to use for this VPC.
     Changing this forces a new resource to be created.
 
+* `network_domain` - (Optional) DNS domain for guest
+    networks. Changing this forces a new resource to be created.
+
 * `project` - (Optional) The name or ID of the project to deploy this
     instance to. Changing this forces a new resource to be created.