diff --git a/app/helpers/render.php b/app/helpers/render.php
new file mode 100644
index 0000000..418d4f9
--- /dev/null
+++ b/app/helpers/render.php
@@ -0,0 +1,23 @@
+<?php
+
+// render config variables array
+function renderConfig($config) {
+    echo "\n\t\t\t\t\t<ul>";
+    foreach ($config as $config_item => $config_value) {
+        echo "\n\t\t\t\t\t\t<li>";
+        echo htmlspecialchars($config_item) . ': ';
+
+        if (is_array($config_value)) {
+            // here we render recursively nested arrays
+            renderConfig($config_value);
+        } else {
+            // if it's not array, just display it
+            echo htmlspecialchars($config_value ?? '');
+        }
+
+        echo '</li>';
+    }
+    echo "\n\t\t\t\t\t</ul>";
+}
+
+?>
diff --git a/app/templates/widget-config.php b/app/templates/widget-config.php
index 817f750..b38a3f3 100644
--- a/app/templates/widget-config.php
+++ b/app/templates/widget-config.php
@@ -2,10 +2,10 @@
                 <!-- widget "config" -->
                 <div>
                     <p>Jilo web configuration</p>
-                    <ul>
-<?php foreach ($config as $config_item=>$config_value) { ?>
-                        <li><?php echo htmlspecialchars($config_item) . ': ' . htmlspecialchars($config_value ?? ''); ?></li>
-<?php } ?>
-                    </ul>
+<?php
+include '../app/helpers/render.php';
+renderConfig($config);
+echo "\n";
+?>
                 </div>
                 <!-- /widget "config" -->