diff --git a/lib/math.js b/lib/math.js
index 5226c41..d004e09 100644
--- a/lib/math.js
+++ b/lib/math.js
@@ -6,9 +6,12 @@ var MathExt =
 , sum: sum
 };
 
+var batteries = require('./');
+
+batteries.object.extend(module.exports, MathExt);
+
 exports.extendNative = function() {
-  Math.avg = avg;
-  Math.sum = sum;
+  batteries.object.extend(Math, MathExt);
 };
 
 function sum() {