diff --git src/wp-includes/general-template.php src/wp-includes/general-template.php
index e789013..88639d1 100644
--- src/wp-includes/general-template.php
+++ src/wp-includes/general-template.php
@@ -1482,7 +1482,7 @@ function wp_get_archives( $args = '' ) {
 			}
 		}
 	} elseif ( ( 'postbypost' == $r['type'] ) || ('alpha' == $r['type'] ) ) {
-		$orderby = ( 'alpha' == $r['type'] ) ? 'post_title ASC ' : 'post_date DESC ';
+		$orderby = ( 'alpha' == $r['type'] ) ? 'post_title ASC ' : 'post_date DESC, ID DESC ';
 		$query = "SELECT * FROM $wpdb->posts $join $where ORDER BY $orderby $limit";
 		$key = md5( $query );
 		$key = "wp_get_archives:$key:$last_changed";