# Error in Case Conversion function

**URL:** <https://community.mp3tag.de/t/error-in-case-conversion-function/72070>\
**Category:** Support\
**Created:** [November 13, 2026, 10:23am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070 "2026-11-13T10:23:06Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![ivo6](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/i/a183cd/32.png) [@ivo6](https://community.mp3tag.de/u/ivo6)\
**Post date:** [November 13, 2026, 10:23am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/1 "2026-11-13T10:23:06Z")

</div>

The case conversion function seems to have an error in the latest mp3tag (v3.37) version. It converts P into p. Up to now this is the only character I have noticed.

---

<div class="post-metadata">

**Author:** ![ivo6](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/i/a183cd/32.png) [@ivo6](https://community.mp3tag.de/u/ivo6)\
**Post date:** [November 13, 2026, 10:30am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/2 "2026-11-13T10:30:30Z")

</div>

The odd thing is that it doesn't do that on all words but e.g. "People"" is converted into "people".

---

<div class="post-metadata">

**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [November 13, 2026, 10:30am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/3 "2026-11-13T10:30:42Z")

</div>

Please show us a screenshot of the action parameters that you use and a field in which this occurs.

---

<div class="post-metadata">

**Author:** ![ivo6](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/i/a183cd/32.png) [@ivo6](https://community.mp3tag.de/u/ivo6)\
**Post date:** [November 13, 2026, 10:35am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/4 "2026-11-13T10:35:24Z")

</div>

![Schermafbeelding 2026-11-13 113302](https://community.mp3tag.de/uploads/default/original/3X/b/7/b7066b57e411c9dd6a7a21bf46c304d57e27a632.png)

---

<div class="post-metadata">

**Author:** ![ivo6](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/i/a183cd/32.png) [@ivo6](https://community.mp3tag.de/u/ivo6)\
**Post date:** [November 13, 2026, 10:39am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/5 "2026-11-13T10:39:26Z")

</div>

![Schermafbeelding 2026-11-13 113727](https://community.mp3tag.de/uploads/default/original/3X/7/0/70b7312e942227b9123c40ce841d472b1c2f890b.png)

The odd thing is when I change "Deceived" into "Peceived" and then Case Conversion it's working correct for that word.

---

<div class="post-metadata">

**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [November 13, 2026, 10:41am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/6 "2026-11-13T10:41:03Z")

</div>

How do you call that action?  
Could it be that you have another action activated that treats just the word "People"?  
Please check the Actions dialogue how many actions you have selected.

---

<div class="post-metadata">

**Author:** ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)\
**Post date:** [November 13, 2026, 10:41am UTC](https://community.mp3tag.de/t/error-in-case-conversion-function/72070/7 "2026-11-13T10:41:50Z")

</div>

Can you try replacing the space character before `people` with one you've entered yourself and try again?

I've just checked the release on Bandcamp: it's `U+00A0`, a non-breaking space which differs from a normal space character and is usually not found in track titles.