diff --git a/tests/functional/C02_Station_MediaCest.php b/tests/functional/C02_Station_MediaCest.php
index a6df20f5d..1ca115dc5 100644
--- a/tests/functional/C02_Station_MediaCest.php
+++ b/tests/functional/C02_Station_MediaCest.php
@@ -29,6 +29,7 @@ class C01_Station_MediaCest extends CestAbstract
             'csrf' => $csrf->generate('files'),
             'flowIdentifier' => 'uploadtest',
             'flowChunkNumber' => 1,
+            'flowCurrentChunkSize' => filesize($test_song),
             'flowFilename' => 'error.mp3',
             'flowTotalSize' => filesize($test_song),
             'flowTotalChunks' => 1,