diff --git a/rhel8/installation.md b/rhel8/installation.md
index bfc782ad..acaaad9a 100644
--- a/rhel8/installation.md
+++ b/rhel8/installation.md
@@ -2,12 +2,11 @@
 
 ## Network Installation
 
-The machine you want to install needs to be registered in `sysdb`:
+The machine you want to install needs to be registered in `sysdb`, so far it only works in the `preprod` Puppet environment:
 ```
 FQDN=...
-bob node set-attr $FQDN puppet_env=rhel8_packages 
+bob node set-attr $FQDN puppet_env=preprod
 ```
-(The `rhel8_packages` Puppet environment is hopefully soon not required any more and the required changes are in `preprod`)
 
 Optional you can set `netboot` and RHEL 8.5 installer but that can also be selected manually in be boot menu:
 ```
@@ -27,7 +26,7 @@ The iPXE menu is then generated according to `sysdb` and its default depends on
 
 ![select Test sub menu in iPXE menu](installation/ipxe_select_test.png)
 
-![select RHEL 8 installation](installation/ipxe_select_rhel8.pngg)
+![select RHEL 8 installation](installation/ipxe_select_rhel8.png)
 
 ### Installation with Legacy BIOS 
 Start the machine and select network boot (if not already the default), then you get following menu:  
@@ -42,5 +41,5 @@ The iPXE menu is then generated according to `sysdb` and its default depends on
 
 ![select Test sub menu in iPXE menu](installation/ipxe_select_test.png)
 
-![select RHEL 8 installation](installation/ipxe_select_rhel8.pngg)
+![select RHEL 8 installation](installation/ipxe_select_rhel8.png)