diff --git a/core/modules/comment/src/Plugin/migrate/source/d6/Comment.php b/core/modules/comment/src/Plugin/migrate/source/d6/Comment.php
index 63dd984..b2511c5 100644
--- a/core/modules/comment/src/Plugin/migrate/source/d6/Comment.php
+++ b/core/modules/comment/src/Plugin/migrate/source/d6/Comment.php
@@ -41,9 +41,11 @@ public function prepareRow(Row $row) {
    * This is a backward compatibility layer for the deprecated migrate source
    * plugins d6_comment_variable and d6_comment_variable_per_comment_type.
    *
-   * @deprecated in Drupal 8.4.x, to be removed before Drupal 9.0.x.
    * @param \Drupal\migrate\Row $row
+   *   The row from the source to process.
    * @return \Drupal\migrate\Row
+   *   The row object.
+   * @deprecated in Drupal 8.4.x, to be removed before Drupal 9.0.x.
    */
   protected function prepareComment(Row $row) {
     if ($this->variableGet('comment_subject_field_' . $row->getSourceProperty('type'), 1)) {