News and press releases | University of Helsinki

Admissions and education | University of Helsinki

People | University of Helsinki

About us | University of Helsinki

Book a venue | University of Helsinki

We are the University of Helsinki | University of Helsinki

Doctoral school | University of Helsinki

News | University of Helsinki

Innovations and cooperation | University of Helsinki

Research | University of Helsinki

When specifying accessible names via `aria-labelledby`, ensure that the 
label elements exist.

## Explanation

Accessible names are required for many parts of a page, including form controls.
One way to accomplish this is to use `aria-labelledby` to specify the ID or IDs of 
other elements which contain a label. For example:

```html
<h2 id="dialog-labell">Important message!</h2>
<dialog aria-labelledby="dialog-label">
```

In this example, the `aria-labelledby` for the `<dialog>` points to an ID of `dialog-label`,
which doesn't exist. The heading it refers to instead has an ID of `dialog-labell`, presumably 
a typo.

## Why this matters

It isn't usually clear when an accessible name is broken, even during user testing.

This check helps to identify where an element clearly intended to have a label, but
that label is missing.

When a label is broken, it may be impossible for a user of assistive technologies
to understand what that element does.

missing-aria-labelled-by

December 2025

November 2025

University of Helsinki

Title / URL	Issues
News and press releases \| University of Helsinkiwww.helsinki.fi/en/news/news-and-press-releases	3
Admissions and education \| University of Helsinkiwww.helsinki.fi/en/admissions-and-education	1
People \| University of Helsinkiwww.helsinki.fi/en/about-us/people	1
About us \| University of Helsinkiwww.helsinki.fi/en/about-us	1
Book a venue \| University of Helsinkiwww.helsinki.fi/en/about-us/book-venue	1
We are the University of Helsinki \| University of Helsinkiwww.helsinki.fi/en/about-us/university-helsinki	1
Doctoral school \| University of Helsinkiwww.helsinki.fi/en/research/doctoral-school	1
News \| University of Helsinkiwww.helsinki.fi/en/news	1
Innovations and cooperation \| University of Helsinkiwww.helsinki.fi/en/innovations-and-cooperation	1
Research \| University of Helsinkiwww.helsinki.fi/en/research	1

Fix missing ARIA label IDs

University of Helsinki

Where this issue has occurred