diff --git a/rhel8/kerberos.md b/rhel8/kerberos.md
index 0613dec2..c9a404da 100644
--- a/rhel8/kerberos.md
+++ b/rhel8/kerberos.md
@@ -15,7 +15,7 @@ If you need for administrative operations a TGT from your admin user (e.g. `buch
 ```
 OLD_KRB5CCNAME=$KRB5CCNAME
 export KRB5CCNAME=KCM:$(id -u):admin
-kinit $(id -n)-adm
+kinit $(id -un)-adm
 ```
 and after you are done do
 ```