diff --git a/test/unit/issue_import_test.rb b/test/unit/issue_import_test.rb
index 61a0d3a..9f238ca 100644
--- a/test/unit/issue_import_test.rb
+++ b/test/unit/issue_import_test.rb
@@ -32,6 +32,8 @@ class IssueImportTest < ActiveSupport::TestCase
            :custom_fields_projects,
            :custom_fields_trackers
 
+  include Redmine::I18n
+
   def setup
     set_language_if_valid 'en'
   end