diff --git a/test/rdoc/test_rdoc_markdown.rb b/test/rdoc/test_rdoc_markdown.rb
index 021d94297b..9c7a406224 100644
--- a/test/rdoc/test_rdoc_markdown.rb
+++ b/test/rdoc/test_rdoc_markdown.rb
@@ -8,6 +8,8 @@
 class TestRDocMarkdown < RDoc::TestCase
 
   def setup
+    super
+
     @RM = RDoc::Markup
 
     @parser = RDoc::Markdown.new
diff --git a/test/rdoc/test_rdoc_ri_driver.rb b/test/rdoc/test_rdoc_ri_driver.rb
index e62323338b..f79d17b1cd 100644
--- a/test/rdoc/test_rdoc_ri_driver.rb
+++ b/test/rdoc/test_rdoc_ri_driver.rb
@@ -13,7 +13,6 @@ def setup
     FileUtils.mkdir_p @home_ri
 
     @orig_ri = ENV['RI']
-    @orig_home = ENV['HOME']
     ENV['HOME'] = @tmpdir
     @rdoc_home = File.join ENV["HOME"], ".rdoc"
     FileUtils.mkdir_p @rdoc_home
@@ -33,7 +32,6 @@ def setup
   end
 
   def teardown
-    ENV['HOME'] = @orig_home
     ENV['RI'] = @orig_ri
     FileUtils.rm_rf @tmpdir