diff --git a/manifests/params.pp b/manifests/params.pp
index 69594d9..aca21ce 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -600,7 +600,7 @@ class confdroid_nagios::params (
   String $ng_statusmap_layout           = '6',
   String $ng_wrl_layout                 = '4',
   Boolean $ng_incl_own_wrl              = false,
-  Optional[String] $ng_statuswrl_incl   = undef,
+  String $ng_statuswrl_incl             = '',
   String $ng_ping_syntax                = '/bin/ping -n -U -c 5 $HOSTADDRESS$',
   String $ng_refresh_rate               = '90',
   String $ng_enable_page_tour           = '1',