diff --git a/schoolapps/templates/partials/header.html b/schoolapps/templates/partials/header.html
index 0a7077048743a2812f86d83c37a3a7cc0f740078..c3198d613cff63235bf0ba4b8cf14e2a6b4b92b5 100755
--- a/schoolapps/templates/partials/header.html
+++ b/schoolapps/templates/partials/header.html
@@ -1,7 +1,7 @@
{% load static %}
<!DOCTYPE html>
-<html lang="de" xmlns="http://www.w3.org/1999/html">
+<html lang="de">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">