diff --git a/library/Icingadb/Common/Auth.php b/library/Icingadb/Common/Auth.php
index 6f4e2690..a7ab885e 100644
--- a/library/Icingadb/Common/Auth.php
+++ b/library/Icingadb/Common/Auth.php
@@ -203,7 +203,12 @@ trait Auth
 
                 $columns = $query->getColumns();
                 if (empty($columns)) {
-                    $columns = [$flatvaluePath, '*'];
+                    $columns = [
+                        $customVarRelationName
+                            ? $resolver->qualifyColumn('flatname', $customVarRelationName)
+                            : 'flatname',
+                        $flatvaluePath
+                    ];
                 }
 
                 $flatvalue = null;