--- /dev/null
+'use strict';
+// 19.1.3.6 Object.prototype.toString()
+var classof = require('./_classof')
+ , test = {};
+test[require('./_wks')('toStringTag')] = 'z';
+if(test + '' != '[object z]'){
+ require('./_redefine')(Object.prototype, 'toString', function toString(){
+ return '[object ' + classof(this) + ']';
+ }, true);
+}
\ No newline at end of file