HTML Validation Issue: edit-form_id

It appears that edit-form_id is also being used by the search form. When I validate the HTML I get this error message:

An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).

Thanks for a great module.