diff --git a/lib/tasks/test.rake b/lib/tasks/test.rake
index 093f7e6..da02d4a 100644
--- a/lib/tasks/test.rake
+++ b/lib/tasks/test.rake
@@ -20,5 +20,5 @@ end
 
 desc 'Runs Seleniun acceptance tests'
 task :selenium do
-  sh "xvfb-run cucumber -p selenium --format #{ENV['CUCUMBER_FORMAT'] || 'progress'}"
+  sh "xvfb-run -a cucumber -p selenium --format #{ENV['CUCUMBER_FORMAT'] || 'progress'}"
 end
--
libgit2 0.21.2