diff --git a/test/unit/lib/redmine/scm/adapters/cvs_adapter_test.rb b/test/unit/lib/redmine/scm/adapters/cvs_adapter_test.rb
index b539836ad..548a587c0 100644
--- a/test/unit/lib/redmine/scm/adapters/cvs_adapter_test.rb
+++ b/test/unit/lib/redmine/scm/adapters/cvs_adapter_test.rb
@@ -3,8 +3,7 @@ begin
   require 'mocha'
 
   class CvsAdapterTest < ActiveSupport::TestCase
-
-    REPOSITORY_PATH = RAILS_ROOT.gsub(%r{config\/\.\.}, '') + '/tmp/test/cvs_repository'
+    REPOSITORY_PATH = Rails.root.join('tmp/test/cvs_repository').to_s
     REPOSITORY_PATH.gsub!(/\//, "\\") if Redmine::Platform.mswin?
     MODULE_NAME = 'test'