diff --git a/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicestatusQuery.php b/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicestatusQuery.php
index 36aecce19..76a8f654d 100644
--- a/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicestatusQuery.php
+++ b/modules/monitoring/library/Monitoring/Backend/Ido/Query/ServicestatusQuery.php
@@ -18,7 +18,7 @@ class ServicestatusQuery extends IdoQuery
     /**
      * {@inheritdoc}
      */
-    protected $groupBase = array('services' => array('so.object_id', 's.service_id'));
+    protected $groupBase = array('services' => array('so.object_id'));
 
     /**
      * {@inheritdoc}