diff -u b/core/lib/Drupal/Core/Theme/ThemeSettings.php b/core/lib/Drupal/Core/Theme/ThemeSettings.php
--- b/core/lib/Drupal/Core/Theme/ThemeSettings.php
+++ b/core/lib/Drupal/Core/Theme/ThemeSettings.php
@@ -15,7 +15,7 @@
 class ThemeSettings extends ConfigBase {
 
   /**
-   * The name of the theme settings object.
+   * The theme of the theme settings object.
    *
    * @var string
    */
@@ -32,10 +32,10 @@
   }
 
   /**
-   * Returns the name of this theme settings object.
+   * Returns the theme of this theme settings object.
    *
    * @return string
-   *   The name of this theme settings object.
+   *   The theme of this theme settings object.
    */
   public function getTheme() {
     return $this->theme;