diff --git a/README.md b/README.md
index dc772438..acad7369 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,8 @@ npm install react-map-gl --save
 ### Usage
 
 ````js
+var MapGL = require('react-map-gl');
+
 <MapGL width={400} height={400} latitude={37.7577} longitude={-122.4376}
   zoom={8} onChangeViewport={(viewport) => {
     var {latitude, longitude, zoom} = viewport;