diff --git a/notebook/templates/notebook.html b/notebook/templates/notebook.html
index 32d8459ff..58ce9d1ff 100644
--- a/notebook/templates/notebook.html
+++ b/notebook/templates/notebook.html
@@ -276,7 +276,7 @@ data-notebook-path="{{notebook_path | urlencode}}"
 
                         {% for helplinks in sections %}
                             {% for link in helplinks %}
-                                <li><a rel="noreferrer" href="{{link[0]}}" {{'target="_blank" title="Opens in a new window"' if link[2]}}>
+                            <li><a rel="noreferrer" href="{{link[0]}}" target="{{'_blank' if link[2]}}" title="{{'Opens in a new window' if link[2]}}">
                                 {% if link[2] %}
                                     <i class="fa fa-external-link menu-icon pull-right"></i>
                                 {% endif %}