diff --git a/wp-includes/taxonomy.php b/wp-includes/taxonomy.php
index 74d411faca..c68b1c7d3d 100644
--- a/wp-includes/taxonomy.php
+++ b/wp-includes/taxonomy.php
@@ -1250,7 +1250,10 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
 		$orderby = '';
 		$order = '';
 	} else {
-		$orderby = 't.term_id';
+		if ( 'tt_ids' == $fields )
+			$orderby = 'tr.term_taxonomy_id';
+		else
+			$orderby = 't.term_id';
 	}
 
 	if ( !empty($orderby) )
@@ -1277,8 +1280,6 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
 	} else if ( 'ids' == $fields || 'names' == $fields ) {
 		$terms = array_merge($terms, $wpdb->get_col($query));
 	} else if ( 'tt_ids' == $fields ) {
-		if ( !empty($order_by) )
-			$orderby = "ORDER BY tr.term_taxonomy_id";
 		$terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order");
 	}