diff --git a/Rakefile b/Rakefile
index d433a1edc1b09f60e4966db4839d9c57b2828d98..66d80bcc2a60a16933dc90b6f9d044b3d0aa5723 100644
--- a/Rakefile
+++ b/Rakefile
@@ -5,6 +5,7 @@ Rake::TestTask.new(:test) do |t|
   t.libs << "test"
   t.libs << "lib"
   t.test_files = FileList["test/**/*_test.rb"]
+  t.options = '-b'
 end
 
 task :default => :test