diff --git a/app/models/user.rb b/app/models/user.rb
index dbb77124..9e8dd2bb 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -308,7 +308,7 @@ class User < Principal
   #validates_presence_of :login,  :mail, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
   validates_presence_of :login, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
   validates_uniqueness_of :login, :if => Proc.new { |user| user.login_changed? && user.login.present? }, :case_sensitive => false
-  validates_uniqueness_of :mail, :if => Proc.new { |user| user.mail_changed? && user.mail.present? }, :case_sensitive => false
+  #validates_uniqueness_of :mail, :if => Proc.new { |user| user.mail_changed? && user.mail.present? }, :case_sensitive => false
   validates_uniqueness_of :phone, :if => Proc.new { |user| user.phone_changed? && user.phone.present? }, :case_sensitive => false
   # Login must contain letters, numbers, underscores only
   #validates_format_of :login, :with => /\A[a-z0-9_\-]*\z/i