diff --git a/platform/Normal.php b/platform/Normal.php
index 2bc3fb2..454eb89 100644
--- a/platform/Normal.php
+++ b/platform/Normal.php
@@ -391,3 +391,9 @@ function WaitFunction() {
 function changeAuthKey() {
     return message("Not need.", 'Change platform Auth token or key', 404);
 }
+
+function smallfileupload($drive, $path) {
+    if ($_FILES['file1']['error']) return output($_FILES['file1']['error'], 400);
+    if ($_FILES['file1']['size']>4*1024*1024) return output('File too large', 400);
+    return $drive->smallfileupload($path, $_FILES['file1']);
+}