diff --git a/object-assign.js b/object-assign.js
index <HASH>..<HASH> 100644
--- a/object-assign.js
+++ b/object-assign.js
@@ -10,7 +10,7 @@
 
 	var ToObject = function (val) {
 		if (val == null) {
-			throw new TypeError('Object.assign can not be called with null or undefined');
+			throw new TypeError('Object.assign cannot be called with null or undefined');
 		}
 
 		return Object(val);
Update object-assign.js