diff --git a/lib/auth.js b/lib/auth.js
index 8f00b77..714acd0 100644
--- a/lib/auth.js
+++ b/lib/auth.js
@@ -118,7 +118,13 @@ module.exports = {
       app_token: appToken
     };
 
-    this._authenticate(requestData, function(responseData) {
+    this._authenticate(requestData, function(err, responseData) {
+      if (err) {
+        callback(err);
+
+        return;
+      }
+
       this._onAccessTokenAcquired(responseData, callback);
     }.bind(this));
   },
diff --git a/test/auth.spec.js b/test/auth.spec.js
index 3686929..de11eb8 100644
--- a/test/auth.spec.js
+++ b/test/auth.spec.js
@@ -199,7 +199,7 @@ describe('auth', function() {
       var authData = { access_token: 'a321' };
       var callback = function() {};
       var host = {
-        _authenticate: sinon.stub().callsArgWith(1, authData),
+        _authenticate: sinon.stub().callsArgWith(1, null, authData),
         _onAccessTokenAcquired: sinon.stub()
       };
 
@@ -209,6 +209,21 @@ describe('auth', function() {
       expect(host._onAccessTokenAcquired.calledWithExactly(authData, callback)).toBe(true);
     });
 
+    it('should not call _onAccessTokenAcquired when auth failed and call the callback', function() {
+      var callback = sinon.stub();
+      var err = new Error();
+      var host = {
+        _authenticate: sinon.stub().callsArgWith(1, err),
+        _onAccessTokenAcquired: sinon.stub()
+      };
+
+      auth.authenticateWithApp.call(host, 123, 'e123', callback);
+
+      expect(host._onAccessTokenAcquired.called).toBe(false);
+      expect(callback.called).toBe(true);
+      expect(callback.calledWithExactly(err)).toBe(true);
+    });
+
   });
 
   describe('_getAuthFromStore', function() {