diff --git a/spec/ruby/library/pathname/empty_spec.rb b/spec/ruby/library/pathname/empty_spec.rb
index ffe00c32e4..e573021491 100644
--- a/spec/ruby/library/pathname/empty_spec.rb
+++ b/spec/ruby/library/pathname/empty_spec.rb
@@ -1,4 +1,4 @@
-require File.expand_path('../../spec_helper', __dir__)
+require File.expand_path('../../../spec_helper', __FILE__)
 require 'pathname'
 
 ruby_version_is '2.4' do