diff --git a/templates/os/sources/sources.list.erb b/templates/os/sources/sources.list.erb
index c96afd1700c7207ff6a12d95954670279fb136dd..ff3f4603ec807ea98e9dddd1d37c026ab5753059 100644
--- a/templates/os/sources/sources.list.erb
+++ b/templates/os/sources/sources.list.erb
@@ -20,6 +20,7 @@ deb-src  http://debian.stanford.edu/ubuntu <%= @lsbdistcodename %>-updates main
 deb     http://debian.stanford.edu/debian <%= @lsbdistcodename %> main non-free contrib
 deb-src http://debian.stanford.edu/debian <%= @lsbdistcodename %> main non-free contrib
 <% end -%>
+<%-
    if (@lsbdistcodename == 'wheezy')
    or (@lsbdistcodename == 'jessie')
    or (@lsbdistcodename == 'stretch')