diff --git a/viewport-units.js b/viewport-units.js
index 53c5c1a..f056b8b 100644
--- a/viewport-units.js
+++ b/viewport-units.js
@@ -1,7 +1,7 @@
 'use strict';
 
 var React = require('react-native')
-  , Dimensions = React.Dimensions || require('Dimensions')
+  , Dimensions = React.Dimensions
   , {width, height} = Dimensions.get('window');
 
 var units = {
@@ -12,4 +12,4 @@ var units = {
 units.vmin = Math.min(units.vw, units.vh);
 units.vmax = Math.max(units.vw, units.vh);
 
-module.exports = units;
\ No newline at end of file
+module.exports = units;