diff --git a/Prerequisites.md b/Prerequisites.md
index 91645a8..97b210f 100644
--- a/Prerequisites.md
+++ b/Prerequisites.md
@@ -8,7 +8,7 @@ To generate an application just run
 docker run --rm -it invoiceninja/invoiceninja php artisan key:generate --show
 ```
 
-This will generate an application key for you which you need later.
+This will generate an application key for you which you need later. The generated key has the following format: `base64:NdRTYZSVE4+062um1CNRscNg9TXFuL22Sb63SwLcqtY=` - yes, the `base64:` belongs to the key!
 
 ### Create folders for data persistence