diff --git a/core/modules/editor/src/EditorXssFilterInterface.php b/core/modules/editor/src/EditorXssFilterInterface.php
index 7575ab26e540..a48a3a98db7b 100644
--- a/core/modules/editor/src/EditorXssFilterInterface.php
+++ b/core/modules/editor/src/EditorXssFilterInterface.php
@@ -34,7 +34,7 @@ interface EditorXssFilterInterface {
    * @param \Drupal\filter\FilterFormatInterface $format
    *   The text format configuration entity. Provides context based upon which
    *   one may want to adjust the filtering.
-   * @param \Drupal\filter\FilterFormatInterface $original_format|null
+   * @param \Drupal\filter\FilterFormatInterface|null $original_format
    *   (optional) The original text format configuration entity (when switching
    *   text formats/editors). Also provides context based upon which one may
    *   want to adjust the filtering.