diff --git a/mutt/templates/Muttrc.local.erb b/mutt/templates/Muttrc.local.erb
index aa8210e..12c4cb2 100644
--- a/mutt/templates/Muttrc.local.erb
+++ b/mutt/templates/Muttrc.local.erb
@@ -4,7 +4,7 @@ set use_8bitmime
 set hostname=<%= mail_domain %>
 
 set imap_authenticators="gssapi:plain"
-<% if ['CentOS','RedHat'].index(operatingsystem) and operatingsystemrelease =~ /^6\./-%>
+<% if ['CentOS','Fedora','RedHat'].index(operatingsystem) and operatingsystemrelease !~ /^[1-5]\./-%>
 set ssl_ca_certificates_file="/etc/pki/tls/certs/ca-bundle.crt"
 <% end -%>