diff --git a/test/api/v3/integration/notFound.test.js b/test/api/v3/integration/notFound.test.js
index 4c17b13dda..e86b6b35e8 100644
--- a/test/api/v3/integration/notFound.test.js
+++ b/test/api/v3/integration/notFound.test.js
@@ -5,7 +5,6 @@ describe('notFound Middleware', () => {
     let request = requester().get('/api/v3/dummy-url');
 
     return expect(request).to.eventually.be.rejected.and.eql({
-      success: false,
       code: 404,
       error: 'NotFound',
       message: 'Not found.',
diff --git a/test/api/v3/integration/user/auth/POST-register_local.test.js b/test/api/v3/integration/user/auth/POST-register_local.test.js
index 8b21447a57..4ad2127cd4 100644
--- a/test/api/v3/integration/user/auth/POST-register_local.test.js
+++ b/test/api/v3/integration/user/auth/POST-register_local.test.js
@@ -39,7 +39,6 @@ describe('POST /user/auth/local/register', () => {
         password,
         confirmPassword: confirmPassword,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 400,
         error: 'BadRequest',
         message: t('invalidReqParams'),
@@ -57,7 +56,6 @@ describe('POST /user/auth/local/register', () => {
         password,
         confirmPassword,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 400,
         error: 'BadRequest',
         message: t('invalidReqParams'),
@@ -74,7 +72,6 @@ describe('POST /user/auth/local/register', () => {
         password,
         confirmPassword: password,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 400,
         error: 'BadRequest',
         message: t('invalidReqParams'),
@@ -93,7 +90,6 @@ describe('POST /user/auth/local/register', () => {
         password,
         confirmPassword: password,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 400,
         error: 'BadRequest',
         message: t('invalidReqParams'),
@@ -111,7 +107,6 @@ describe('POST /user/auth/local/register', () => {
         email:           email,
         confirmPassword: confirmPassword,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 400,
         error: 'BadRequest',
         message: t('invalidReqParams'),
@@ -143,7 +138,6 @@ describe('POST /user/auth/local/register', () => {
         password:        password,
         confirmPassword: password,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 401,
         error: 'NotAuthorized',
         message: t('usernameTaken'),
@@ -161,7 +155,6 @@ describe('POST /user/auth/local/register', () => {
         password,
         confirmPassword: password,
       })).to.eventually.be.rejected.and.eql({
-        success: false,
         code: 401,
         error: 'NotAuthorized',
         message: t('emailTaken'),
diff --git a/test/api/v3/unit/middlewares/errorHandler.test.js b/test/api/v3/unit/middlewares/errorHandler.test.js
index 096d25b850..790eaf448d 100644
--- a/test/api/v3/unit/middlewares/errorHandler.test.js
+++ b/test/api/v3/unit/middlewares/errorHandler.test.js
@@ -34,7 +34,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(500);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'InternalServerError',
       message: 'An unexpected error occurred.',
     });
@@ -51,7 +50,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(400);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'Error',
       message: 'Error message',
     });
@@ -68,7 +66,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(500);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'InternalServerError',
       message: 'An unexpected error occurred.',
     });
@@ -84,7 +81,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(400);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'BadRequest',
       message: 'Bad request.',
     });
@@ -101,7 +97,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(error.statusCode);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: error.name,
       message: error.message,
     });
@@ -117,7 +112,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(400);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'BadRequest',
       message: 'Invalid request parameters.',
       errors: error,
@@ -143,7 +137,6 @@ describe('errorHandler', () => {
 
     expect(res.status).to.be.calledWith(400);
     expect(res.json).to.be.calledWith({
-      success: false,
       error: 'BadRequest',
       message: 'User validation failed.',
       errors: [
diff --git a/test/api/v3/unit/middlewares/response.js b/test/api/v3/unit/middlewares/response.js
index 5850ef35fd..ca3d160908 100644
--- a/test/api/v3/unit/middlewares/response.js
+++ b/test/api/v3/unit/middlewares/response.js
@@ -31,7 +31,6 @@ describe('response middleware', function() {
     expect(res.status).to.be.calledWith(200);
     expect(res.json).to.be.calledWith({
       field: 1,
-      success: true,
     });
   });
 
@@ -45,7 +44,6 @@ describe('response middleware', function() {
     expect(res.status).to.be.calledWith(403);
     expect(res.json).to.be.calledWith({
       field: 1,
-      success: false,
     });
   });
 });
diff --git a/test/helpers/api-integration.helper.js b/test/helpers/api-integration.helper.js
index be3e9e66b7..48ee56739d 100644
--- a/test/helpers/api-integration.helper.js
+++ b/test/helpers/api-integration.helper.js
@@ -252,7 +252,6 @@ function _requestMaker (user, method, additionalSets) {
 
             if (API_V === 'v3') {
               return reject({
-                success: err.response.body.success,
                 code: err.status,
                 error: err.response.body.error,
                 message: err.response.body.message,
diff --git a/website/src/middlewares/api-v3/response.js b/website/src/middlewares/api-v3/response.js
index 7d60df3dba..707d7ad0bf 100644
--- a/website/src/middlewares/api-v3/response.js
+++ b/website/src/middlewares/api-v3/response.js
@@ -1,8 +1,6 @@
 export default function responseHandler (req, res, next) {
   res.respond = function respond (status = 200, data = {}) {
-    res.status(status);
-    data.success = status >= 400 ? false : true; // TODO the data object should be cloned to avoid pollution?
-    res.json(data);
+    res.status(status).json(data);
   };
 
   next();