diff --git a/test/tests/test_rails31.rb b/test/tests/test_rails31.rb
index ee8e40e675edb01eb91d0b8814c1e9e1c108c8a6..1b5ada6a67f0d2134d5f413bbe30aebd57c83b92 100644
--- a/test/tests/test_rails31.rb
+++ b/test/tests/test_rails31.rb
@@ -1,6 +1,6 @@
 abort "Please run using test/test.rb" unless defined? BrakemanTester
 
-Rails31 = BrakemanTester.run_scan "rails3.1", "Rails 3.1", :rails3 => true
+Rails31 = BrakemanTester.run_scan "rails3.1", "Rails 3.1", :rails3 => true, :parallel_checks => false
 
 class Rails31Tests < Test::Unit::TestCase
   include BrakemanTester::FindWarning