diff --git a/shadow.js b/shadow.js
index 904d84d..7341d9b 100644
--- a/shadow.js
+++ b/shadow.js
@@ -4,7 +4,6 @@ import {
   createTemplate,
   getJwt,
   isHtmlElement,
-  isNotNull,
   isNull,
   isObject,
   isString,