diff --git a/notebook/templates/tree.html b/notebook/templates/tree.html
index d84a973c1..652197832 100644
--- a/notebook/templates/tree.html
+++ b/notebook/templates/tree.html
@@ -56,7 +56,7 @@ data-server-root="{{server_root}}"
                 <form id='alternate_upload'  class='alternate_upload'>
                   <span id="notebook_list_info">
                   <span class="btn btn-xs btn-default btn-upload">
-                  <input  title="{% trans %}Click to browse for a file to upload.{% endtrans %}" type="file" name="datafile" class="fileinput" multiple='multiple'>
+                  <input title="{% trans %}Click to browse for a file to upload.{% endtrans %}" aria-label="Upload" type="file" name="datafile" class="fileinput" multiple='multiple'>
                   {% trans %}Upload{% endtrans %}
                   </span>
                   </span>