diff --git a/admin-guide/operations/certificates.md b/admin-guide/operations/certificates.md
index 6c3cdef9..8f283f32 100644
--- a/admin-guide/operations/certificates.md
+++ b/admin-guide/operations/certificates.md
@@ -5,11 +5,11 @@ We use DigiCert certificates.
 
 ## Requesting certificates
 
-First create a certificate signing request (CSR) like this, replacing `$FQDN`
-and `$ALIASES`
+First create a certificate signing request (CSR) like this, replacing the values for `FQDN`
+and `ALIASES`
 
 ```
-ALTNAMES=xyz.psi.ch
+ALIASES=xyz.psi.ch
 FQDN=xyz00.psi.ch
 
 cat >$FQDN.cnf <<EOF