Fix #589
diff --git a/system/database/DB_query_builder.php b/system/database/DB_query_builder.php
index a3ba773..3643977 100644
--- a/system/database/DB_query_builder.php
+++ b/system/database/DB_query_builder.php
@@ -1444,13 +1444,13 @@
// --------------------------------------------------------------------
/**
- * Insert_batch statement
+ * Insert batch statement
*
* Generates a platform-specific insert string from the supplied data.
*
- * @param string the table name
- * @param array the insert keys
- * @param array the insert values
+ * @param string $table Table name
+ * @param array $keys INSERT keys
+ * @param array $values INSERT values
* @return string
*/
protected function _insert_batch($table, $keys, $values)