diff --git a/nagios/manifests/target.pp b/nagios/manifests/target.pp
index 950d44a..87e2ec9 100644
--- a/nagios/manifests/target.pp
+++ b/nagios/manifests/target.pp
@@ -1,9 +1,24 @@
 # Configure nagios target.
 #
+# === Global variables
+#
+#   $nagios_target_group:
+#       Host and service group name. Defaults to $domain.
+#
 class nagios::target {
 
+    if $nagios_target_group {
+        $group = $nagios_target_group
+    } else {
+        if $::domain {
+            $group = $::domain
+        } else {
+            $group = "unknown"
+        }
+    }
+
     @@nagios::host { $::homename:
-        group  => $::domain,
+        group  => $group,
         osname => $::operatingsystem,
         osicon => $::osfamily ? {
             ""      => "NONE",
@@ -13,7 +28,7 @@ class nagios::target {
 
     Nagios::Service {
         host  => $::homename,
-        group => $::domain,
+        group => $group,
     }
 
 }