diff --git a/library/Icingadb/Model/HoststateSummary.php b/library/Icingadb/Model/HoststateSummary.php
index 3adeaedb..a55a2d3f 100644
--- a/library/Icingadb/Model/HoststateSummary.php
+++ b/library/Icingadb/Model/HoststateSummary.php
@@ -66,4 +66,9 @@ class HoststateSummary extends Host
             ]
         );
     }
+
+    public function getDefaultSort()
+    {
+        return null;
+    }
 }
diff --git a/library/Icingadb/Model/ServicestateSummary.php b/library/Icingadb/Model/ServicestateSummary.php
index a22d49f9..062580ce 100644
--- a/library/Icingadb/Model/ServicestateSummary.php
+++ b/library/Icingadb/Model/ServicestateSummary.php
@@ -71,4 +71,9 @@ class ServicestateSummary extends Service
             ]
         );
     }
+
+    public function getDefaultSort()
+    {
+        return null;
+    }
 }