diff --git a/web/app/controllers/problem_data_manage.php b/web/app/controllers/problem_data_manage.php
index 138ae69..51bbd6f 100644
--- a/web/app/controllers/problem_data_manage.php
+++ b/web/app/controllers/problem_data_manage.php
@@ -50,7 +50,7 @@
 			becomeMsgPage('<div>' . $errmsg . '</div><a href="/problem/'.$problem['id'].'/manage/data">返回</a>');
 		} else {
 			$zip_mime_types = array('application/zip', 'application/x-zip', 'application/x-zip-compressed');
-			if (in_array($_FILES["problem_data_file"]["type"], $zip_mime_types)) {
+			if (in_array($_FILES["problem_data_file"]["type"], $zip_mime_types) || $_FILES["problem_data_file"]["type"] == 'application/octet-stream' && substr($_FILES["problem_data_file"]["name"], -4) == '.zip') {
 				$up_filename="/tmp/".rand(0,100000000)."data.zip";
 				move_uploaded_file($_FILES["problem_data_file"]["tmp_name"], $up_filename);
 				$zip = new ZipArchive;