diff --git a/app/models/user.rb b/app/models/user.rb
index 4040ba226..4868e8068 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,8 +1,8 @@
 class User < ApplicationModel
   include Gmaps
 
-  before_create           :check_name, :check_email, :check_image, :check_geo
-  before_update           :check_password, :check_image, :check_geo
+  before_create           :check_name, :check_email, :check_login, :check_image, :check_geo
+  before_update           :check_password, :check_image, :check_geo, :check_email, :check_login
   after_create            :cache_delete
   after_update            :cache_delete
   after_destroy           :cache_delete
@@ -367,6 +367,12 @@ Your #{config.product_name} Team
       end
     end
 
+    def check_login
+      if self.login
+        self.login = self.login.downcase
+      end
+    end
+
     def check_image
       require 'digest/md5'
       if !self.image || self.image == ''