diff --git a/README.md b/README.md
index 21680e3..005baac 100644
--- a/README.md
+++ b/README.md
@@ -240,7 +240,7 @@ class ErbImplementationTest < ActiveSupport::TestCase
     pathname = Pathname.new(filename).relative_path_from(Rails.root)
     test "html errors in #{pathname}" do
       data = File.read(filename)
-      BetterHtml::BetterErb::ErubiImplementation.new(data, filename:).validate!
+      assert_nothing_raised { BetterHtml::BetterErb::ErubiImplementation.new(data, filename:).validate! }
     end
   end
 end