diff --git a/core/modules/views/src/Plugin/views/style/DefaultSummary.php b/core/modules/views/src/Plugin/views/style/DefaultSummary.php
index 5040d27..3646e54 100644
--- a/core/modules/views/src/Plugin/views/style/DefaultSummary.php
+++ b/core/modules/views/src/Plugin/views/style/DefaultSummary.php
@@ -19,7 +19,7 @@
  *   id = "default_summary",
  *   title = @Translation("List"),
  *   help = @Translation("Displays the default summary as a list."),
- *   theme = "item_list__views_view_summary'",
+ *   theme = "item_list",
  *   display_types = {"summary"}
  * )
  */
diff --git a/core/modules/views/views.module b/core/modules/views/views.module
index 687430c..3607f91 100644
--- a/core/modules/views/views.module
+++ b/core/modules/views/views.module
@@ -304,8 +304,8 @@ function views_theme_suggestions_container_alter(array &$suggestions, array $var
 /**
  * Implements hook_theme_suggestions_HOOK().
  */
-function views__theme_suggestions_item_list__views_view_summary(array $variables) {
-  return 'item_list';
+function views_theme_suggestions_item_list(array $variables) {
+  return array('item_list__views_view_summary');
 }
 
 /**