diff --git a/scripts/setup-ssl.ps1 b/scripts/setup-ssl.ps1
index 14523a1..8045348 100644
--- a/scripts/setup-ssl.ps1
+++ b/scripts/setup-ssl.ps1
@@ -61,12 +61,13 @@ foreach ($d in $domains) {
     # --installation iis -> auto bind HTTPS 443 + http->https redirect
     # --accepttos      -> accept Let's Encrypt terms
     # --emailaddress   -> contact email for expiry alerts
+    $siteId = (Get-Website $d.Site).Id
     $wacsArgs = @(
         "--target", "manual",
         "--host", $d.HostName,
-        "--siteid", (Get-Website $d.Site).Id,
         "--store", "certificatestore",
         "--installation", "iis",
+        "--installationsiteid", $siteId,
         "--accepttos",
         "--emailaddress", "admin@huypham.vn"
     )