diff --git a/Classes/Utility/ApiUtility.php b/Classes/Utility/ApiUtility.php
index 5f75905..a1cfa88 100644
--- a/Classes/Utility/ApiUtility.php
+++ b/Classes/Utility/ApiUtility.php
@@ -206,6 +206,9 @@ class ApiUtility
                         $row,
                         $rowResult
                     );
+                    if ($rowResult[$attributeName] === null) {
+                        unset($rowResult[$attributeName]);
+                    }
                 }
             }
             $result[] = $rowResult;