# Umlaute is an Invalid character constant?

**URL:** <https://discourse.processing.org/t/umlaute-is-an-invalid-character-constant/47857>\
**Category:** Coding Questions\
**Created:** [February 7, 2026, 5:47pm UTC](https://discourse.processing.org/t/umlaute-is-an-invalid-character-constant/47857 "2026-02-07T17:47:48Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [February 7, 2026, 6:30pm UTC](https://discourse.processing.org/t/umlaute-is-an-invalid-character-constant/47857/2 "2026-02-07T18:30:50Z")

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Hello @u.strautz,

Welcome!

It works with Processing 4.4.10 on W10:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/2/d/2d8e36f14d1b927473bf786838d360f2b405f1cb.png)

Also works with Processing 4.5.2 on W10.

Can you please provide some details:

- Processing version
- Operating system
- An MCVE for us to try.  
This can help narrow it down.  
Sometimes it is the renderer or something else in the code.

More on MCVE here:  
_[Guidelines—Asking Questions](https://discourse.processing.org/t/guidelines-asking-questions/2147)_

`:)`

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