diff --git a/public/views/control.js b/public/views/control.js
index bcc8284..3e532fc 100644
--- a/public/views/control.js
+++ b/public/views/control.js
@@ -178,7 +178,7 @@ async function renderReleases(panel) {
     if (!fileInput.files?.[0]) return notify(upMsg, 'pick a tarball first', false);
     if (!verInput.value.trim()) return notify(upMsg, 'version required', false);
     const fd = new FormData();
-    fd.append('release', fileInput.files[0]);
+    fd.append('file', fileInput.files[0]);
     fd.append('version', verInput.value.trim());
     fd.append('notes', notesInput.value);
     notify(upMsg, 'uploading…', true);