diff --git a/test/ruby/enc/test_emoji_breaks.rb b/test/ruby/enc/test_emoji_breaks.rb
index 37a29640d8..31d5f3f87d 100644
--- a/test/ruby/enc/test_emoji_breaks.rb
+++ b/test/ruby/enc/test_emoji_breaks.rb
@@ -3,7 +3,10 @@
 
 require "test/unit"
 
-class BreakTest
+class TestEmojiBreaks < Test::Unit::TestCase
+end
+
+class TestEmojiBreaks::BreakTest
   attr_reader :string, :comment, :filename, :line_number, :type, :shortname
 
   def initialize (filename, line_number, data, comment='')
diff --git a/test/ruby/enc/test_grapheme_breaks.rb b/test/ruby/enc/test_grapheme_breaks.rb
index 7f6c776113..c982a839df 100644
--- a/test/ruby/enc/test_grapheme_breaks.rb
+++ b/test/ruby/enc/test_grapheme_breaks.rb
@@ -3,7 +3,10 @@
 
 require "test/unit"
 
-class BreakTest
+class TestGraphemeBreaksFromFile < Test::Unit::TestCase
+end
+
+class TestGraphemeBreaksFromFile::BreakTest
   attr_reader :clusters, :string, :comment, :line_number
 
   def initialize (line_number, data, comment)