**[Paweł Firlej](https://jira.spring.io/secure/ViewProfile.jspa?name=pfirlej)** opened **[SPR-10103](https://jira.spring.io/browse/SPR-10103?redirect=false)** and commented The org.springframework.web.servlet.support.RequestDataValueProcessor generates hidden html input fields as: \<input type="hidden" name="xxx" value="yyy">\</input> Such closing tag on input element is invalid in HTML 4.01. Should be: \<input type="hidden" name="xxx" value="yyy"> --- **Affects:** 3.1.2