diff --git a/lib/legacy/polymer.dom.html b/lib/legacy/polymer.dom.html
index f86596b1e9..54125e847e 100644
--- a/lib/legacy/polymer.dom.html
+++ b/lib/legacy/polymer.dom.html
@@ -39,6 +39,8 @@
   /**
    * Node API wrapper class returned from `Polymer.dom.(target)` when
    * `target` is a `Node`.
+   *
+   * @memberof Polymer
    */
   class DomApi {