diff --git a/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
index 929c386..6cdef50 100644
--- a/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -125,7 +125,7 @@ function theme_admin_block($variables) {
 }
 
 /**
- * Prepares variables for administrative content block template.
+ * Prepares variables for administrative content block templates.
  *
  * Default template: admin-block-content.html.twig.
  *
diff --git a/core/modules/system/templates/admin-block-content.html.twig b/core/modules/system/templates/admin-block-content.html.twig
index a83ae27..30a9ca1 100644
--- a/core/modules/system/templates/admin-block-content.html.twig
+++ b/core/modules/system/templates/admin-block-content.html.twig
@@ -9,7 +9,6 @@
  *   contain the keys 'title', 'link_path', and 'localized_options', which are
  *   passed to l(). A 'description' key may also be provided.
  * - attributes: HTML attributes to be aded to the element.
- * - is_compact_mode: It defines if compact mode is used.
  *
  * @see template_preprocess_admin_block_content()
  *