diff --git a/includes/services/dns/check.inc b/includes/services/dns/check.inc
index 28fa47993e..0b259d68dc 100644
--- a/includes/services/dns/check.inc
+++ b/includes/services/dns/check.inc
@@ -1,9 +1,10 @@
 <?php
 
 // provide some sane default
-if ($service['service_param']) { $nsquery = $service['service_param']; } else { $nsquery = "localhost"; }
+if ($service['service_param']) { $nsquery  = $service['service_param']; } else { $nsquery  = "localhost";          }
+if ($service['service_ip'])    { $resolver = $service['service_ip'];    } else { $resolver = $service['hostname']; }
 
-$check = shell_exec($config['nagios_plugins'] . "/check_dns -H ".$nsquery." -s ".$service['hostname']);
+$check = shell_exec($config['nagios_plugins'] . "/check_dns -H ".$nsquery." -s ".$resolver);
 
 list($check, $time) = split("\|", $check);