diff --git a/packages/google-cloud-compute/src/index.js b/packages/google-cloud-compute/src/index.js
index af8a3e19ef5..96642bc2151 100644
--- a/packages/google-cloud-compute/src/index.js
+++ b/packages/google-cloud-compute/src/index.js
@@ -78,10 +78,11 @@ var Zone = require('./zone.js');
  */
 function Compute(options) {
   if (!(this instanceof Compute)) {
-    options = common.util.normalizeArguments(this, options);
     return new Compute(options);
   }
 
+  options = common.util.normalizeArguments(this, options);
+
   var config = {
     baseUrl: 'https://www.googleapis.com/compute/v1',
     scopes: ['https://www.googleapis.com/auth/compute'],
diff --git a/packages/google-cloud-compute/test/index.js b/packages/google-cloud-compute/test/index.js
index fddcd6a7bfc..6db6ce9f0b7 100644
--- a/packages/google-cloud-compute/test/index.js
+++ b/packages/google-cloud-compute/test/index.js
@@ -57,6 +57,7 @@ var fakeUtil = extend({}, util, {
     ]);
   },
 });
+var originalFakeUtil = extend(true, {}, fakeUtil);
 
 var fakePaginator = {
   extend: function(Class, methods) {
@@ -178,40 +179,36 @@ describe('Compute', function() {
   });
 
   beforeEach(function() {
+    extend(fakeUtil, originalFakeUtil);
     compute = new Compute({
       projectId: PROJECT_ID,
     });
   });
 
   describe('instantiation', function() {
-    var options = {
-      projectId: PROJECT_ID,
-      credentials: 'credentials',
-      email: 'email',
-      keyFilename: 'keyFile',
-    };
-
     it('should return a new instance of Compute', function() {
       var compute = new Compute({projectId: PROJECT_ID});
       assert(compute instanceof Compute);
     });
 
+    it('should work without new', function() {
+      assert.doesNotThrow(function() {
+        Compute({projectId: PROJECT_ID});
+      });
+    });
+
     it('should normalize the arguments', function() {
-      var normalizeArguments = fakeUtil.normalizeArguments;
       var normalizeArgumentsCalled = false;
-      var fakeContext = {};
+      var options = {};
 
       fakeUtil.normalizeArguments = function(context, options_) {
         normalizeArgumentsCalled = true;
-        assert.strictEqual(context, fakeContext);
-        assert.strictEqual(options, options_);
+        assert.strictEqual(options_, options);
         return options_;
       };
 
-      Compute.call(fakeContext, options);
-      assert(normalizeArgumentsCalled);
-
-      fakeUtil.normalizeArguments = normalizeArguments;
+      new Compute(options);
+      assert.strictEqual(normalizeArgumentsCalled, true);
     });
 
     it('should inherit from Service', function() {