X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/964ab3dd90ff1508efc0c77378cde2b3a4da1029..9acc8cb9cd9ca4429712b0d31b647e9a6ecf2d96:/services/api/public/500.html

diff --git a/services/api/public/500.html b/services/api/public/500.html
index b80307fc16..e40a748e4a 100644
--- a/services/api/public/500.html
+++ b/services/api/public/500.html
@@ -1,5 +1,9 @@
+<!-- Copyright (C) The Arvados Authors. All rights reserved.
+
+SPDX-License-Identifier: AGPL-3.0 -->
+
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
   <title>We're sorry, but something went wrong (500)</title>
   <style type="text/css">
