diff --git a/src/Field/FileField.php b/src/Field/FileField.php
index 9e03412..b86a0b8 100644
--- a/src/Field/FileField.php
+++ b/src/Field/FileField.php
@@ -43,7 +43,7 @@ protected function init(): void
         }
 
         $this->reference = HasOneSql::assertInstanceOf($this->getOwner()->hasOne($this->shortName, [
-            'type' => $this->fileModel->getField('token')->type,
+            'type' => $this->fileModel->getField('token')->type, // TODO imply in https://github.com/atk4/data/blob/develop/src/Reference/HasOne.php#L27
             'model' => $this->fileModel,
             'theirField' => 'token',
         ]));