diff --git a/test/unit/i18n_test.rb b/test/unit/i18n_test.rb
index 6d1b1e7..733b83e 100644
--- a/test/unit/i18n_test.rb
+++ b/test/unit/i18n_test.rb
@@ -21,7 +21,7 @@ class I18nTest < ActiveSupport::TestCase
   def test_locales_validness
     lang_files_count = Dir[Rails.root.join('plugins/redmine_messenger/config/locales/*.yml')].size
 
-    assert_equal 6, lang_files_count
+    assert_equal 7, lang_files_count
     valid_languages.each do |lang|
       assert set_language_if_valid(lang)
       case lang.to_s