diff --git a/manifests/init.pp b/manifests/init.pp
index e27a043..db60c5b 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -30,6 +30,8 @@
   $service_ensure                = 'running',
   $service_enable                = $::squid3::params::service_enable,
   $service_name                  = $::squid3::params::service_name,
+  $append_domain_opt             = $::squid3::params::append_domain_opt,
+  $append_domain                 = undef,
 ) inherits ::squid3::params {
 
   $use_template = $template ? {
diff --git a/manifests/params.pp b/manifests/params.pp
index 741fcee..d28680e 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -41,6 +41,12 @@
     }
   }
 
+  $append_domain_opt = "false"
+
+  if $append_domain_opt == 'true' {
+    $config_append_domain = $append_domain
+  }
+
   $access_log      = [ "${log_directory}/access.log squid" ]
   $cache_log       = "${log_directory}/cache.log"
   $cache_store_log = "${log_directory}/store.log"
diff --git a/templates/squid.conf.long.erb b/templates/squid.conf.long.erb
index 8df1b62..e5de8cd 100644
--- a/templates/squid.conf.long.erb
+++ b/templates/squid.conf.long.erb
@@ -5213,6 +5213,9 @@ server_persistent_connections <%= @server_persistent_connections %>
 #
 #Example:
 # append_domain .yourdomain.com
+<% if @append_domain_opt -%>
+append_domain <%= @append_domain %>
+<% end -%>
 #Default:
 # none
 
diff --git a/templates/squid.conf.short.erb b/templates/squid.conf.short.erb
index 40599af..29c7587 100644
--- a/templates/squid.conf.short.erb
+++ b/templates/squid.conf.short.erb
@@ -1,6 +1,10 @@
 ## THIS FILE IS MANAGED BY PUPPET.
 ## DO NOT EDIT.
 
+<% if @append_domain_opt -%>
+append_domain <%= @append_domain %>
+<% end -%>
+
 # predefined ACLs
 <% if @use_deprecated_opts -%>
 acl manager proto cache_object