diff --git a/client/js/views/post_upload_view.js b/client/js/views/post_upload_view.js
index 4c8691b..144526b 100644
--- a/client/js/views/post_upload_view.js
+++ b/client/js/views/post_upload_view.js
@@ -279,6 +279,7 @@ class PostUploadView extends events.EventTarget {
             rowNode.querySelector('.safety input:checked').value;
         uploadable.anonymous =
             rowNode.querySelector('.anonymous input').checked;
+        uploadable.flags = [];
         if (rowNode.querySelector('.loop-video input:checked')) {
             uploadable.flags.push('loop');
         }