diff --git a/admin-guide/operations/certificates.rst b/admin-guide/operations/certificates.rst
index 123f5d81..2915d35d 100644
--- a/admin-guide/operations/certificates.rst
+++ b/admin-guide/operations/certificates.rst
@@ -58,4 +58,4 @@ and submit the CSR as before.
 
 Revoke certificates
 -------------------
-?
+If you would like to revoke a DigiCert certificate, please send an e-mail to pki@psi.ch