diff --git a/services/collaboration/README.md b/services/collaboration/README.md
index fd4e3e0daa..140ea7a546 100644
--- a/services/collaboration/README.md
+++ b/services/collaboration/README.md
@@ -27,8 +27,11 @@ If any of the named services above have not been started or are not reachable, t
 There are a few variables that you need to set:
 
 * `COLLABORATION_APP_NAME`:\
-  The name of the connected WebOffice app, which can be one of the following:\
-  `Collabora`, `OnlyOffice`, `Microsoft365` or `MicrosoftOfficeOnline`.
+  The name of the app which is shown to the user. You can chose freely but you are limited to a single word without special characters or whitespaces. We recommend to use pascalCase like 'CollaboraOnline'.
+
+* `COLLABORATION_APP_PRODUCT`:\
+  The product name of the connected WebOffice app, which can be one of the following:\
+  `Collabora`, `OnlyOffice`, `Microsoft365` or `MicrosoftOfficeOnline`. This is used to internally control the behavior according to the different features of the used products.
 
 * `COLLABORATION_APP_ADDR`:\
   The URL of the collaborative editing app (onlyoffice, collabora, etc).\