diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index be110d1511..a974870fe3 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -3649,6 +3649,9 @@ function get_pages($args = '') {
 	if ( !in_array( $post_type, $hierarchical_post_types ) )
 		return $pages;
 
+	if ( $parent > 0 && empty( $child_of ) && ! isset( $args['child_of'] ) )
+		$hierarchical = false;
+
 	// Make sure we have a valid post status
 	if ( !is_array( $post_status ) )
 		$post_status = explode( ',', $post_status );