diff --git a/test/unit/mailer_test.rb b/test/unit/mailer_test.rb
index a55d8d0..a5150a9 100644
--- a/test/unit/mailer_test.rb
+++ b/test/unit/mailer_test.rb
@@ -20,7 +20,13 @@ require File.expand_path('../../test_helper', __FILE__)
 class MailerTest < ActiveSupport::TestCase
   include Redmine::I18n
   include ActionController::Assertions::SelectorAssertions
-  fixtures :all
+  fixtures :projects, :enabled_modules, :issues, :users, :members,
+           :member_roles, :roles, :documents, :attachments, :news,
+           :tokens, :journals, :journal_details, :changesets, :trackers,
+           :issue_statuses, :enumerations, :messages, :boards, :repositories,
+           :wikis, :wiki_pages, :wiki_contents, :wiki_content_versions,
+           :versions,
+           :comments
 
   def setup
     ActionMailer::Base.deliveries.clear