diff --git a/lib/utils/boot.js b/lib/utils/boot.js
index 511b3c5219..ec500c55ae 100644
--- a/lib/utils/boot.js
+++ b/lib/utils/boot.js
@@ -9,3 +9,5 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 */
 
 window.JSCompiler_renameProperty = function(prop) { return prop; };
+
+export {};