diff --git a/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php b/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
index 535b3fcb9b..10421abaae 100644
--- a/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
+++ b/core/lib/Drupal/Core/Entity/Element/EntityAutocomplete.php
@@ -296,7 +296,7 @@ protected static function matchEntityByTitle(SelectionInterface $handler, $input
         $multiples[] = $name . ' (' . $id . ')';
       }
       $params['@id'] = $id;
-      $form_state->setError($element, t('Multiple entities match this reference; "%multiple". Specify the one you want by appending the id in parentheses, like "@value (@id)".', ['%multiple' => strip_tags(implode('", "', $multiples))]+ $params));
+      $form_state->setError($element, t('Multiple entities match this reference; "%multiple". Specify the one you want by appending the id in parentheses, like "@value (@id)".', ['%multiple' => strip_tags(implode('", "', $multiples))] + $params));
     }
     else {
       // Take the one and only matching entity.