diff --git a/core/lib/Drupal/Core/Entity/EntityInterface.php b/core/lib/Drupal/Core/Entity/EntityInterface.php
index f54a928..cabb271 100644
--- a/core/lib/Drupal/Core/Entity/EntityInterface.php
+++ b/core/lib/Drupal/Core/Entity/EntityInterface.php
@@ -300,7 +300,7 @@ public function referencedEntities();
   /**
    * Returns the original ID.
    *
-   * @return string|null
+   * @return int|string|null
    *   The original ID, if any.
    */
   public function getOriginalId();
@@ -308,7 +308,7 @@ public function getOriginalId();
   /**
    * Sets the original ID.
    *
-   * @param string $id
+   * @param int|string|null $id
    *   The new ID to set as original ID.
    *
    * @return $this