diff --git a/website/source/docs/builders/azure.html.md b/website/source/docs/builders/azure.html.md
index f673d34fd..779a374b8 100644
--- a/website/source/docs/builders/azure.html.md
+++ b/website/source/docs/builders/azure.html.md
@@ -29,7 +29,7 @@ builder.
 
 -   `client_secret` (string) The password or secret for your service principal.
 
--   `subscription_id` (string) Subscription under which the build will be performed. **The service principal specified in `client_id` must have full access to this subscription.**
+-   `subscription_id` (string) Subscription under which the build will be performed. **The service principal specified in `client_id` must have full access to this subscription, unless build_resource_group_name option is specified in which case it needs to have owner access to the existing resource group specified in build_resource_group_name parameter.**
 -   `capture_container_name` (string) Destination container name. Essentially the "directory" where your VHD will be organized in Azure.  The captured VHD's URL will be `https://<storage_account>.blob.core.windows.net/system/Microsoft.Compute/Images/<capture_container_name>/<capture_name_prefix>.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.vhd`.
 
 -   `image_publisher` (string) PublisherName for your base image. See [documentation](https://azure.microsoft.com/en-us/documentation/articles/resource-groups-vm-searching/) for details.