diff --git a/core/modules/taxonomy/src/TermStorageInterface.php b/core/modules/taxonomy/src/TermStorageInterface.php
index 610ede6fbe6432958d5f626daf7ed5d72af0eb6f..29401868d782aa9dfbffe0e9a4681d710673aacc 100644
--- a/core/modules/taxonomy/src/TermStorageInterface.php
+++ b/core/modules/taxonomy/src/TermStorageInterface.php
@@ -87,7 +87,8 @@ public function loadChildren($tid, $vid = NULL);
    *   numbers of terms. Defaults to FALSE.
    *
    * @return object[]|\Drupal\taxonomy\TermInterface[]
-   *   An array of term objects that are the children of the vocabulary $vid.
+   *   A numerically indexed array of term objects that are the children of the
+   *   vocabulary $vid.
    */
   public function loadTree($vid, $parent = 0, $max_depth = NULL, $load_entities = FALSE);