diff --git a/core/modules/aggregator/tests/Drupal/aggregator/Tests/Plugin/AggregatorPluginSettingsBaseTest.php b/core/modules/aggregator/tests/Drupal/aggregator/Tests/Plugin/AggregatorPluginSettingsBaseTest.php
index 26b2c33..7523f9d 100644
--- a/core/modules/aggregator/tests/Drupal/aggregator/Tests/Plugin/AggregatorPluginSettingsBaseTest.php
+++ b/core/modules/aggregator/tests/Drupal/aggregator/Tests/Plugin/AggregatorPluginSettingsBaseTest.php
@@ -111,7 +111,7 @@ public function testSettingsForm() {
 
 }
 
-// @todo Remove when drupal_set_message() is injectable.
+// @todo Remove after https://drupal.org/node/1830588 is in.
 namespace {
   if (!function_exists('drupal_set_message')) {
     function drupal_set_message() {}