diff --git a/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php b/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
index 1842a4382c49c87cd21510d1de7c3339ea71f031..8d69571a50d0e8f3422837a3a2ab8a99fff905ea 100644
--- a/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
+++ b/core/modules/text/src/Plugin/Field/FieldFormatter/TextTrimmedFormatter.php
@@ -74,7 +74,7 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
       // because text_pre_render_summary() must run last.
       $element += \Drupal::service('element_info')->getInfo($element['#type']);
       // Add the #pre_render callback that renders the text into a summary.
-      $element['#pre_render'][] = '\Drupal\text\Plugin\field\FieldFormatter\TextTrimmedFormatter::preRenderSummary';
+      $element['#pre_render'][] = [TextTrimmedFormatter::class, 'preRenderSummary'];
       // Pass on the trim length to the #pre_render callback via a property.
       $element['#text_summary_trim_length'] = $this->getSetting('trim_length');
     };