diff --git a/forms/UploadField.php b/forms/UploadField.php
index 3f43f3f99..8d35f2f6a 100644
--- a/forms/UploadField.php
+++ b/forms/UploadField.php
@@ -550,7 +550,7 @@ class UploadField extends FileField {
 		));
 		// we do this in a second customise to have the access to the previous customisations
 		return $file->customise(array(
-			'UploadFieldFileButtons' => (string)$file->renderWith($this->getTemplateFileButtons())
+			'UploadFieldFileButtons' => $file->renderWith($this->getTemplateFileButtons())
 		));
 	}