diff --git a/src/Symfony/Bundle/SecurityBundle/Resources/views/Collector/security.html.twig b/src/Symfony/Bundle/SecurityBundle/Resources/views/Collector/security.html.twig
index 31ffe3c9d23b..9e5a7ddecffe 100644
--- a/src/Symfony/Bundle/SecurityBundle/Resources/views/Collector/security.html.twig
+++ b/src/Symfony/Bundle/SecurityBundle/Resources/views/Collector/security.html.twig
@@ -145,6 +145,7 @@
                     <span class="label">Allows anonymous</span>
                 </div>
             </div>
+
             {% if collector.firewall.security_enabled %}
                 <table>
                     <thead>
@@ -156,38 +157,38 @@
                     <tbody>
                         <tr>
                             <th>provider</th>
-                            <td>{{ collector.firewall.provider }}</td>
+                            <td>{{ collector.firewall.provider ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>context</th>
-                            <td>{{ collector.firewall.context }}</td>
+                            <td>{{ collector.firewall.context ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>entry_point</th>
-                            <td>{{ collector.firewall.entry_point }}</td>
+                            <td>{{ collector.firewall.entry_point ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>user_checker</th>
-                            <td>{{ collector.firewall.user_checker }}</td>
+                            <td>{{ collector.firewall.user_checker ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>access_denied_handler</th>
-                            <td>{{ collector.firewall.access_denied_handler }}</td>
+                            <td>{{ collector.firewall.access_denied_handler ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>access_denied_url</th>
-                            <td>{{ collector.firewall.access_denied_url }}</td>
+                            <td>{{ collector.firewall.access_denied_url ?: '(none)' }}</td>
                         </tr>
                         <tr>
                             <th>listeners</th>
-                            <td>{{ collector.firewall.listeners is empty ? 'none' : profiler_dump(collector.firewall.listeners, maxDepth=1) }}</td>
+                            <td>{{ collector.firewall.listeners is empty ? '(none)' : profiler_dump(collector.firewall.listeners, maxDepth=1) }}</td>
                         </tr>
                     </tbody>
                 </table>
             {% endif %}
         {% elseif collector.enabled %}
             <div class="empty">
-                <p>There is no firewall.</p>
+                <p>This request was not covered by any firewall.</p>
             </div>
         {% endif %}
     {% else %}