X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/2d4263c16812a906589cbc13be26535a85691bd8..3d5a1c29aad86476f2e789e1e54cabf8b4605aa2:/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">
