diff --git a/website/server/controllers/api-v3/auth.js b/website/server/controllers/api-v3/auth.js
index d69597808d..2dd925efe7 100644
--- a/website/server/controllers/api-v3/auth.js
+++ b/website/server/controllers/api-v3/auth.js
@@ -162,8 +162,10 @@ api.registerLocal = {
 };
 
 function _loginRes (user, req, res) {
+  var newUser = false;
+  if (user.newUser) newUser = true;
   if (user.auth.blocked) throw new NotAuthorized(res.t('accountSuspended', {userId: user._id}));
-  return res.respond(200, {id: user._id, apiToken: user.apiToken});
+  return res.respond(200, {id: user._id, apiToken: user.apiToken, newUser});
 }
 
 /**
@@ -260,6 +262,7 @@ api.loginSocial = {
 
       let savedUser = await user.save();
 
+      user.newUser = true;
       _loginRes(user, ...arguments);
 
       // Clean previous email preferences