diff --git a/app/models/mail_handler.rb b/app/models/mail_handler.rb
index 2aaa8bbf0..f0f0f41b1 100755
--- a/app/models/mail_handler.rb
+++ b/app/models/mail_handler.rb
@@ -199,7 +199,7 @@ class MailHandler < ActionMailer::Base
     issue.safe_attributes = {'custom_field_values' => custom_field_values_from_keywords(issue)}
     issue.subject = cleaned_up_subject
     if issue.subject.blank?
-      issue.subject = '(no subject)'
+      issue.subject = "(#{ll(Setting.default_language, :text_no_subject)})"
     end
     issue.description = cleaned_up_text_body
     issue.start_date ||= User.current.today if Setting.default_issue_start_date_to_creation_date?
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 262ad1ba4..b9beac9e6 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1218,6 +1218,7 @@ en:
   text_turning_multiple_off: "If you disable multiple values, multiple values will be removed in order to preserve only one value per item."
   text_select_apply_tracker: "Select tracker"
   text_avatar_server_config_html: The current avatar server is <a href="%{url}">%{url}</a>. You can configure it in config/configuration.yml.
+  text_no_subject: No subject
 
 
   default_role_manager: Manager
diff --git a/test/unit/mail_handler_test.rb b/test/unit/mail_handler_test.rb
index 469722a37..1ca564ebd 100644
--- a/test/unit/mail_handler_test.rb
+++ b/test/unit/mail_handler_test.rb
@@ -738,12 +738,14 @@ class MailHandlerTest < ActiveSupport::TestCase
   end
 
   def test_add_issue_with_no_subject_header
-    issue = submit_email(
-              'no_subject_header.eml',
-              :issue => {:project => 'ecookbook'}
-            )
-    assert_kind_of Issue, issue
-    assert_equal '(no subject)', issue.subject
+    with_settings :default_language => 'en' do
+      issue = submit_email(
+                'no_subject_header.eml',
+                :issue => {:project => 'ecookbook'}
+              )
+      assert_kind_of Issue, issue
+      assert_equal "(No subject)", issue.subject
+    end
   end
 
   def test_add_issue_with_mixed_japanese_subject