diff --git a/simple_app/templates/bad_request.html b/simple_app/templates/bad_request.html
index 8b9ef41..917a137 100644
--- a/simple_app/templates/bad_request.html
+++ b/simple_app/templates/bad_request.html
@@ -3,7 +3,7 @@
 
 {% block content %}
 
-    <div class="container" xmlns="http://www.w3.org/1999/html">
+    <div class="container">
         <h1 class="display-2" style="text-align: center">{{ e.code|safe }}</h1>
         <h2 class="display-3" style="text-align: center">Something went wrong:<br>{{ e.description|safe }}</h2>
         <h3 class="display-6">Please send the above error code and what you were trying to do, to the