diff --git a/dashboard/src/components/BackupDialog.vue b/dashboard/src/components/BackupDialog.vue
index c9c562870..5bde2aaff 100644
--- a/dashboard/src/components/BackupDialog.vue
+++ b/dashboard/src/components/BackupDialog.vue
@@ -80,6 +80,10 @@ async function onSubmit() {
 
   if (s3like(data.provider)) {
     data.endpoint = endpoint.value;
+    data.prefix = prefix.value;
+    data.bucket = bucket.value;
+    data.accessKeyId = accessKeyId.value;
+    data.secretAccessKey = secretAccessKey.value;
 
     if (data.provider === 's3') {
       data.region = region.value || undefined;