diff --git a/nagios/manifests/target.pp b/nagios/manifests/target.pp
index d0f32f0..3f35edb 100644
--- a/nagios/manifests/target.pp
+++ b/nagios/manifests/target.pp
@@ -1,16 +1,14 @@
 # Configure nagios target.
 #
-# === Parameters
-#
-#   $parent:
-#       Parent hostname.
-#
 # === Global variables
 #
 #   $nagios_target_group:
 #       Host and service group name. Defaults to $domain.
 #
-class nagios::target($parent=undef) {
+#   $nagios_target_parent:
+#       Parent hostname.
+#
+class nagios::target {
 
     if $nagios_target_group {
         $group = $nagios_target_group
@@ -22,6 +20,14 @@ class nagios::target($parent=undef) {
         }
     }
 
+    if $nagios_target_parent {
+        $parent = $nagios_target_parent
+    } elsif $::libvirt_host {
+        $parent = $::libvirt_host
+    } else {
+        $parent = undef
+    }
+
     @@nagios::host { $::homename:
         group  => $group,
         osname => $::operatingsystem,