Index: /Users/denis/Sites/sem-pro/wp-includes/taxonomy.php
===================================================================
--- /Users/denis/Sites/sem-pro/wp-includes/taxonomy.php	(revision 557)
+++ /Users/denis/Sites/sem-pro/wp-includes/taxonomy.php	(working copy)
@@ -1234,9 +1234,9 @@
 	}
 
 	if ( ! $terms )
-		return array();
+		$terms = array();
 
-	return $terms;
+	return apply_filters('wp_get_object_terms', $terms, $object_ids, $taxonomies, $args);
 }
 
 /**