diff --git a/test/unit/lib/redmine/scm/adapters/git_adapter_test.rb b/test/unit/lib/redmine/scm/adapters/git_adapter_test.rb
index 9c5ead48b..bc9959dc6 100644
--- a/test/unit/lib/redmine/scm/adapters/git_adapter_test.rb
+++ b/test/unit/lib/redmine/scm/adapters/git_adapter_test.rb
@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require File.expand_path('../../../../../../test_helper', __FILE__)
 
 class GitAdapterTest < ActiveSupport::TestCase