diff --git a/app/mailers/mailer.rb b/app/mailers/mailer.rb
index 7a6cccd7..c035cc32 100644
--- a/app/mailers/mailer.rb
+++ b/app/mailers/mailer.rb
@@ -61,7 +61,7 @@ class Mailer < ActionMailer::Base
     @transaction  = transaction
 
     mail :to => user.email,
-         :subject => "[#{FoodsoftConfig[:name]}] " + I18n.t('mailer.negative_balance')
+         :subject => "[#{FoodsoftConfig[:name]}] " + I18n.t('mailer.negative_balance.subject')
   end
 
   def feedback(user, feedback)
diff --git a/app/views/mailer/negative_balance.text.haml b/app/views/mailer/negative_balance.text.haml
index 94734be5..f1a27a34 100644
--- a/app/views/mailer/negative_balance.text.haml
+++ b/app/views/mailer/negative_balance.text.haml
@@ -1 +1 @@
-= t '.text', group: @group.name, when: @transaction.created_on.strftime('%d.%m.%Y um %H:%M'), balance: @group.account_balance, amount:@transaction.amount, note: @transaction.note, user: show_user(@transaction.user), foodcoop: FoodsoftConfig[:name]
+= raw t '.text', group: h(@group.name), when: format_time(@transaction.created_on), balance: number_to_currency(@group.account_balance), amount: number_to_currency(@transaction.amount), note: h(@transaction.note), user: h(show_user(@transaction.user)), foodcoop: h(FoodsoftConfig[:name])