diff --git a/core/modules/locale/locale.pages.inc b/core/modules/locale/locale.pages.inc
index 4119d491b6..2f8957cc88 100644
--- a/core/modules/locale/locale.pages.inc
+++ b/core/modules/locale/locale.pages.inc
@@ -13,12 +13,14 @@
  *
  * Manually checks the translation status without the use of cron.
  *
- * @deprecated in Drupal 8.5.0 and will be removed before 9.0.0.
+ * @deprecated in Drupal 8.5.0 and will be removed before 9.0.0. It is unused by
+ *   Drupal core. Duplicate this function in your own extension if you need its
+ *   behavior.
  *
- * @see https://www.drupal.org/node/2551259
+ * @see https://www.drupal.org/node/2931188
  */
 function locale_translation_manual_status() {
-  @trigger_error('locale_translation_manual_status() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. See https://www.drupal.org/node/2551259.', E_USER_DEPRECATED);
+  @trigger_error('locale_translation_manual_status() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. It is unused by Drupal core. Duplicate this function in your own extension if you need its behavior.', E_USER_DEPRECATED);
   module_load_include('compare.inc', 'locale');
 
   // Check the translation status of all translatable projects in all languages.
diff --git a/core/modules/locale/tests/src/Kernel/LocaleDeprecationsTest.php b/core/modules/locale/tests/src/Kernel/LocaleDeprecationsTest.php
new file mode 100644
index 0000000000..5b3a2f8377
--- /dev/null
+++ b/core/modules/locale/tests/src/Kernel/LocaleDeprecationsTest.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace Drupal\Tests\locale\Kernel;
+
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests deprecations in the locale module.
+ *
+ * @group locale
+ * @group legacy
+ */
+class LocaleDeprecationsTest extends KernelTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['locale', 'system'];
+
+  /**
+   * @expectedDeprecation locale_translation_manual_status() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. It is unused by Drupal core. Duplicate this function in your own extension if you need its behavior.
+   *
+   * @covers ::locale_translation_manual_status
+   */
+  public function testLocaleTranslationManualStatusDeprecation() {
+    module_load_include('pages.inc', 'locale');
+    $this->assertNotNull(\locale_translation_manual_status());
+  }
+
+}