Rakefile in rake-10.0.0.beta.2 vs Rakefile in rake-10.0.0

@@ -58,9 +58,10 @@
 
 # Test Tasks ---------------------------------------------------------
 
 Rake::TestTask.new do |t|
   files = FileList['test/helper.rb', 'test/test_*.rb']
+  t.loader = :testrb
   t.test_files = files
   t.libs << "."
   t.warning = true
 end