diff --git a/deploy/exclude-groups.mdx b/deploy/exclude-groups.mdx
index f100e1c5a..749bebb09 100644
--- a/deploy/exclude-groups.mdx
+++ b/deploy/exclude-groups.mdx
@@ -81,12 +81,14 @@ Mintlify applies include and exclude rules everywhere it applies `groups`:
 
 Mintlify rejects `groups` values that it can't evaluate safely:
 
-- `includes` can't be empty. Omit `includes` to allow every group.
+- `includes` can't be empty. Omit `includes` to allow every group, or set `groups: []` to deny access to everyone.
 - `excludes` can't contain the `*` wildcard.
 - Group names can't be empty strings.
 - Rules can only contain `includes` and `excludes`.
 - A single `groups` list can't mix group names and rule objects.
 
+If any page has an invalid `groups` value, Mintlify fails the deployment and doesn't update your site. The deployment error lists each affected page path.
+
 <CodeGroup>
 
 ```mdx Valid