diff --git a/manifests/params.pp b/manifests/params.pp
index 7a0e6ea..cc047d6 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -308,7 +308,7 @@ $ng_ack_no_send       = '0',
 $ng_use_selinux_tools = true,
 
 # httpd
-$ng_required_hosts    = [''],
+$ng_required_hosts    = '',
 $ng_required_ips      = ['127.0.0.0/8'],
 
 ) {