diff --git a/test/helper.rb b/test/helper.rb
index 90c806a0..5668f2ec 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -58,6 +58,7 @@ module Minitest::Assertions
   def refute_exist(filename, msg = nil)
     msg = message(msg) { "Expected '#{filename}' not to exist" }
     refute File.exist?(filename), msg
+  end
 end
 
 module DirectoryHelpers