diff --git a/core-key-helper.html b/core-key-helper.html
index b9fe474..1c9e484 100644
--- a/core-key-helper.html
+++ b/core-key-helper.html
@@ -9,6 +9,9 @@
 
 <link rel="import" href="../polymer/polymer.html">
 
+<!--
+@element core-key-helper
+-->
 <polymer-element name="core-key-helper">
   <script>
     Polymer('core-key-helper', {
diff --git a/core-overlay-layer.html b/core-overlay-layer.html
index c1370fa..58a5bb5 100644
--- a/core-overlay-layer.html
+++ b/core-overlay-layer.html
@@ -8,6 +8,9 @@
 -->
 <link rel="import" href="../polymer/polymer.html">
 
+<!--
+@element core-overlay-layer
+-->
 <polymer-element name="core-overlay-layer">
 <template>
   <style>