AngularRequireSeed 工程中controller的scope为undefined，什么原因？

define(['controllers/controllers'], function (controllers) {

'use strict';
controllers.controller('MyCtrl1', [function ($scope) {
    console.log($scope); //这里为undefined
}]);

});

---

controllers.controller('MyCtrl1', ['$scope',function ($scope) {

console.log($scope); 

}]);