diff --git a/externs/polymer-externs.js b/externs/polymer-externs.js
index 9ed377e848..ef4a6a315d 100644
--- a/externs/polymer-externs.js
+++ b/externs/polymer-externs.js
@@ -153,6 +153,9 @@ Polymer.orderedComputed;
 /** @type {boolean} */
 Polymer.fastDomIf;
 
+/** @type {boolean} */
+Polymer.removeNestedTemplates;
+
 /** @type {boolean} */
 Polymer.suppressTemplateNotifications;