diff --git a/platform/AliyunFC.php b/platform/AliyunFC.php
index a32b650..65d0c91 100644
--- a/platform/AliyunFC.php
+++ b/platform/AliyunFC.php
@@ -546,3 +546,7 @@ function changeAuthKey() {
     </script>';
     return message($html, 'Change platform Auth token or key', 200);
 }
+
+function smallfileupload($drive, $path) {
+    return output('Can not upload through FC.', 400);
+}