diff --git a/chef/cookbooks/apache2/recipes/mod_ssl.rb b/chef/cookbooks/apache2/recipes/mod_ssl.rb
index ac95f3e0dd..d3860462ce 100644
--- a/chef/cookbooks/apache2/recipes/mod_ssl.rb
+++ b/chef/cookbooks/apache2/recipes/mod_ssl.rb
@@ -40,7 +40,8 @@
   # override the resource defined in default.rb; we don't want to create the
   # resource again, otherwise we will write the file twice
   resource = resources(template: "#{node[:apache][:dir]}/ports.conf")
-  resource.variables({apache_listen_ports: [node[:apache][:listen_ports], "443"].flatten})
+  node[:apache][:listen_ports] << "443"
+  resource.variables({apache_listen_ports: node[:apache][:listen_ports]})
 end
 
 apache_module "ssl" do