diff --git a/src/wp-includes/query.php b/src/wp-includes/query.php
index 033db0cf05..559ce807d4 100644
--- a/src/wp-includes/query.php
+++ b/src/wp-includes/query.php
@@ -4590,10 +4590,12 @@ class WP_Query {
 		 * Fires once the post data has been setup.
 		 *
 		 * @since 2.8.0
+		 * @since 4.1.0 Introduced $this parameter.
 		 *
-		 * @param WP_Post &$post The Post object (passed by reference).
+		 * @param WP_Post  &$post The Post object (passed by reference).
+		 * @param WP_Query &$this The current Query object (passed by reference).
 		 */
-		do_action_ref_array( 'the_post', array( &$post ) );
+		do_action_ref_array( 'the_post', array( &$post, &$this ) );
 
 		return true;
 	}