diff --git a/components/volume-slider/index.js b/components/volume-slider/index.js
index 8d30720..b268304 100644
--- a/components/volume-slider/index.js
+++ b/components/volume-slider/index.js
@@ -1,5 +1,3 @@
-/* global window */
-
 const React = require('react');
 
 const r = require('r-dom');