diff --git a/config_entity_example/lib/Drupal/config_entity_example/Controller/RobotListController.php b/config_entity_example/lib/Drupal/config_entity_example/Controller/RobotListController.php
index 7df7d8a..3bcbe8f 100644
--- a/config_entity_example/lib/Drupal/config_entity_example/Controller/RobotListController.php
+++ b/config_entity_example/lib/Drupal/config_entity_example/Controller/RobotListController.php
@@ -49,4 +49,26 @@ class RobotListController extends ConfigEntityListController {
     return $row + parent::buildRow($entity);
   }
 
+  /**
+   * Add some descriptive text to our entity list.
+   *
+   * @return array
+   *   Renderable array.
+   */
+  public function render() {
+    $build['description'] = array(
+      '#markup' => $this->t("<p>The Config Entity Example module defines a"
+        . " Robot entity type. This is a list of the Robot entities currently"
+        . " in your Drupal site.</p><p>By default, when you enable this module,"
+        . " one entity is created from configuration. This is why we call them"
+        . " Config Entities. Marvin, the paranoid android, is created in the"
+        . " database when the module is enabled.</p><p>You can view a list of"
+        . " Robots here. You can also use the 'Operations' column to edit and"
+        . " delete Robots. You can also click on the Robots' names to view"
+        . " them.</p>"),
+    );
+    $build[] = parent::render();
+    return $build;
+  }
+
 }