diff --git a/lib/models/node.js b/lib/models/node.js
index 571ac76cb..aaea9b590 100644
--- a/lib/models/node.js
+++ b/lib/models/node.js
@@ -301,7 +301,7 @@ const Node = {
   /**
    * Get a child node by `key`.
    *
-   * @param {String} key
+   * @param {String or Node} key
    * @return {Node or Null} node
    */