diff --git a/lib/Doctrine/DBAL/Driver/OCI8/OCI8Connection.php b/lib/Doctrine/DBAL/Driver/OCI8/OCI8Connection.php
index b636b362cf2..2ee1e365fc3 100644
--- a/lib/Doctrine/DBAL/Driver/OCI8/OCI8Connection.php
+++ b/lib/Doctrine/DBAL/Driver/OCI8/OCI8Connection.php
@@ -176,6 +176,8 @@ public function lastInsertId($name = null)
     /**
      * Returns the current execution mode.
      *
+     * @internal
+     *
      * @return int
      */
     public function getExecuteMode()