diff --git a/Gemfile b/Gemfile
index 2b9f2a4..62a6625 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,6 @@ source "http://rubygems.org"
 gemspec
 
 require 'rbconfig'
-gem 'guard'
 gem 'guard-rspec'
 gem 'rake'
 
diff --git a/Rakefile b/Rakefile
index 941b516..8c33355 100644
--- a/Rakefile
+++ b/Rakefile
@@ -9,23 +9,9 @@ RSpec::Core::RakeTask.new(:spec)
 namespace :spec do
   desc "Run on three Rubies"
   task :platforms do
-    current = %x{rvm-prompt v}
-    
-    fail = false
-    %w{1.8.7 1.9.2 ree}.each do |version|
-      puts "Switching to #{version}"
-      Bundler.with_clean_env do
-        system %{bash -c 'source ~/.rvm/scripts/rvm && rvm #{version} && bundle exec rake spec'}
-      end
-      if $?.exitstatus != 0
-        fail = true
-        break
-      end
-    end
-
-    system %{rvm #{current}}
-
-    exit (fail ? 1 : 0)
+    system %{rvm 1.8.7,1.9.2,ree ruby bundle}
+    system %{rvm 1.8.7,1.9.2,ree ruby bundle exec rake spec}
+    exit $?.exitstatus
   end
 end