diff --git a/app/models/epp/domain.rb b/app/models/epp/domain.rb
index 0593e1652..20a00561a 100644
--- a/app/models/epp/domain.rb
+++ b/app/models/epp/domain.rb
@@ -37,7 +37,12 @@ class Epp::Domain < Domain
     # validate registrant here as well
     ([Contact.find(registrant.id)] + active_admins + active_techs).each do |x|
       unless x.valid?
-        add_epp_error('2304', nil, nil, I18n.t(:contact_is_not_valid, value: x.try(:code)))
+        if x.underage?
+          add_epp_error('2304', nil, nil, I18n.t('activerecord.errors.models.domain.contact_too_young'))
+        else
+          add_epp_error('2304', nil, nil, I18n.t(:contact_is_not_valid, value: x.try(:code)))
+        end
+
         ok = false
       end
     end