diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index 2ff9032b8631cd435bd3f260d838c3d5a6bd4c74..3b9d2643f8e9baef870000a077f91afe1c57c9c0 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -1705,6 +1705,13 @@ protected function drupalPostAjaxForm($path, $edit, $triggering_element, $ajax_p
       $this->drupalProcessAjaxResponse($content, $return, $ajax_settings, $drupal_settings);
     }
 
+    $verbose = 'AJAX POST request to: ' . $path;
+    $verbose .= '<br />AJAX controller path: ' . $ajax_path;
+    $verbose .= '<hr />Ending URL: ' . $this->getUrl();
+    $verbose .= '<hr />' . $this->content;
+
+    $this->verbose($verbose);
+
     return $return;
   }