diff --git a/back/methods/vn-user/update-user.js b/back/methods/vn-user/update-user.js
index 2bb390cf9..32bad0f17 100644
--- a/back/methods/vn-user/update-user.js
+++ b/back/methods/vn-user/update-user.js
@@ -22,7 +22,7 @@ module.exports = Self => {
                 description: 'The user email'
             }, {
                 arg: 'lang',
-                type: 'string',
+                type: 'any',
                 description: 'The user lang'
             }, {
                 arg: 'twoFactor',