diff --git a/doc/vhost.md b/doc/vhost.md
index 086eb5e..c0091f8 100644
--- a/doc/vhost.md
+++ b/doc/vhost.md
@@ -10,6 +10,7 @@ Common
 
 - `name`: (M) Domain or list of domain used.
 - `template`: (D) template used to create vhost. Optional if you set `delete` to true or using `redirect_tor`.
+- `filename`: (O) Specify filename in /etc/nginx/sites-*. Do NOT specify default (reserved keyword).
 - `enable`: (O) Enable the vhost (default is true)
 - `delete`: (O) Delete the vhost (default is false)
 - `redirect_from`: (O) Domain list to redirect to the first `name`. You can use this key to redirect non-www to www
diff --git a/tests/test.yml b/tests/test.yml
index a3a98c0..24439f2 100644
--- a/tests/test.yml
+++ b/tests/test.yml
@@ -119,6 +119,7 @@
           - 'test-alias.local'
           - 'test2-alias.local'
         template: '_base'
+        filename : 'first-test'
         override_try_files: '$uri $uri index.htm index.html'
         manage_local_content: false
         more: