diff --git a/docs/static/includes/interfaces/int.cmk.schema.tf b/docs/static/includes/interfaces/int.cmk.schema.tf
index 7b2ca61e3..42a1890a6 100644
--- a/docs/static/includes/interfaces/int.cmk.schema.tf
+++ b/docs/static/includes/interfaces/int.cmk.schema.tf
@@ -1,9 +1,11 @@
 variable "customer_managed_key" {
   type = object({
-    key_vault_resource_id              = string
-    key_name                           = string
-    key_version                        = optional(string, null)
-    user_assigned_identity_resource_id = optional(string, null)
+    key_vault_resource_id  = string
+    key_name               = string
+    key_version            = optional(string, null)
+    user_assigned_identity = optional(object({
+      resource_id = string
+    }), null)
   })
   default = null
 }