diff --git a/core/tests/Drupal/KernelTests/Core/Theme/MaintenanceThemeTest.php b/core/tests/Drupal/KernelTests/Core/Theme/MaintenanceThemeTest.php
index 06ed04b..7cadffa 100644
--- a/core/tests/Drupal/KernelTests/Core/Theme/MaintenanceThemeTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Theme/MaintenanceThemeTest.php
@@ -17,7 +17,7 @@
 class MaintenanceThemeTest extends KernelTestBase {
 
   /**
-   * Ensures that the maintenance theme initializes theme and their base themes.
+   * Tests that the maintenance theme initializes the theme and its base themes.
    */
   public function testMaintenanceTheme() {
     $this->setSetting('maintenance_theme', 'seven');