diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index bf8152b99..51f6af6bb 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -132,7 +132,7 @@ class UsersController < ApplicationController
     # Was the account actived ? (do it before User#save clears the change)
     was_activated = (@user.status_change == [User::STATUS_REGISTERED, User::STATUS_ACTIVE])
     # TODO: Similar to My#account
-    @user.pref.attributes = params[:pref] if params[:pref]
+    @user.pref.safe_attributes = params[:pref]
 
     if @user.save
       @user.pref.save