# INF-001: EPUBCheck rule under review, how to fix it

Source: https://epubcc.com/epubcheck/inf-001/ (updated 2026-11-04)

EPUBCheck INF-001 is an info message: “Rule … is under review and its severity may change in a future release. See the discussion at ….” The rule behind a message is under review and its severity may change in a later EPUBCheck release. The note names the rule and links to the public discussion, so you can see why it may change.

- Official message (EPUBCheck 5.4.0): Rule %1$s is under review and its severity may change in a future release. See the discussion at %2$s
- Default severity: Info

## Typical causes

- A check the EPUBCheck maintainers are reconsidering, reported next to the message it concerns.
- Running a recent EPUBCheck version on a book that triggers that check.

## How to fix it

1. Nothing to fix because of this note itself.
2. Read the linked discussion to see whether the rule is likely to become stricter or looser.
3. Fix the message it refers to if it applies to your book, so the result does not change when the severity does.

## When it's not this

This note is about EPUBCheck itself, not your EPUB; the message it accompanies is the one to read.

## Sources

- EPUBCheck 5.4.0 message texts (MessageBundle.properties, w3c/epubcheck on GitHub): https://github.com/w3c/epubcheck/blob/v5.4.0/src/main/resources/com/adobe/epubcheck/messages/MessageBundle.properties (read 2026-11-04)

Message text and severity: EPUBCheck (W3C, BSD-3-Clause). Explanation: EpubCC.