diff --git a/test/ruby/enc/test_case_comprehensive.rb b/test/ruby/enc/test_case_comprehensive.rb
index 2b93692317..13c61ba7d5 100644
--- a/test/ruby/enc/test_case_comprehensive.rb
+++ b/test/ruby/enc/test_case_comprehensive.rb
@@ -14,7 +14,7 @@ class TestComprehensiveCaseFold < Test::Unit::TestCase
   def self.expand_filename(basename)
     File.expand_path("#{UNICODE_DATA_PATH}/#{basename}.txt", __dir__)
   end
-  
+
   def self.data_files_available?
     %w[UnicodeData CaseFolding SpecialCasing].all? do |f|
       File.exist?(expand_filename(f))