diff --git a/modules/drupal/manifests/init.pp b/modules/drupal/manifests/init.pp
index 3ab1116be3..bd8e1335b1 100644
--- a/modules/drupal/manifests/init.pp
+++ b/modules/drupal/manifests/init.pp
@@ -78,6 +78,7 @@ class drupal (
   $site_ssl_enabled = false,
   $site_ssl_cert_file_contents = undef,
   $site_ssl_key_file_contents = undef,
+  $site_ssl_chain_file_contents = undef,
   $site_ssl_cert_file = '',
   $site_ssl_key_file = '',
   $site_ssl_chain_file = '',
diff --git a/modules/drupal/templates/drupal.vhost.erb b/modules/drupal/templates/drupal.vhost.erb
index 754491a574..487012f1d6 100644
--- a/modules/drupal/templates/drupal.vhost.erb
+++ b/modules/drupal/templates/drupal.vhost.erb
@@ -16,7 +16,7 @@ NameVirtualHost <%= @vhost_name %>:443
   SSLProtocol All -SSLv2 -SSLv3
   SSLCertificateFile      <%= @site_ssl_cert_file %>
   SSLCertificateKeyFile   <%= @site_ssl_key_file %>
-<% if @site_ssl_chain_file_contents != '' %>
+<% if @site_ssl_chain_file_contents %>
   SSLCertificateChainFile <%= @site_ssl_chain_file %>
 <% end %>
 <% end %>