diff --git a/Prerequisites.md b/Prerequisites.md
index 97b210f..2050e95 100644
--- a/Prerequisites.md
+++ b/Prerequisites.md
@@ -19,12 +19,12 @@ To make your data persistent, you have to mount `public` and `storage` from your
 
 You can create these folders wherever you want on your host system.
 
-:warning: When using host mounted folder for persistence, make sure they are owned by the proper user and group. As we run Invoice Ninja without `root` , we use a separate user, the folders on the host system need to be owned by uid `1000` and a gid `101`.  
+:warning: When using host mounted folder for persistence, make sure they are owned by the proper user and group. As we run Invoice Ninja without `root` , we use a separate user, the folders on the host system need to be owned by uid `1000` and a gid `82` (`www-data` group).  
 
 Run this on your host system
 
 ```shell
-chown -R 1000:101 /var/invoiceninja/public /var/invoiceninja/storage
+chown -R 1000:82 /var/invoiceninja/public /var/invoiceninja/storage
 ```
 
 to apply the proper permission to the folders. This also applies to the `docker-compose` setup when using [bind-mounted host directories](https://github.com/invoiceninja/dockerfiles/blob/master/docker-compose.yml#L17).