diff --git a/spec/acceptance_helper.rb b/spec/acceptance_helper.rb
index 0f2e04f..13708eb 100644
--- a/spec/acceptance_helper.rb
+++ b/spec/acceptance_helper.rb
@@ -1,5 +1,10 @@
 require 'spec_helper'
 
+unless ENV['USER'] == 'vagrant'
+  puts 'Acceptance specs are supposed to run from one of the vagrant dev machines'
+  exit 1
+end
+
 if defined? SimpleCov
   SimpleCov.command_name 'acceptance'
 end