diff --git a/tests/unit/Service/FileServiceTest.php b/tests/unit/Service/FileServiceTest.php
index a94dd8253..069a013be 100644
--- a/tests/unit/Service/FileServiceTest.php
+++ b/tests/unit/Service/FileServiceTest.php
@@ -98,6 +98,7 @@ class FileServiceTest extends TestCase {
 		$attachment = new Attachment();
 		$attachment->setId(1);
 		$attachment->setCardId(123);
+		$attachment->setData('Filename.md');
 		return $attachment;
 	}