# Replace Filename doesn't work
**URL:** https://community.mp3tag.de/t/replace-filename-doesnt-work/70879
**Category:** Mac
**Created:** [March 15, 2026, 10:14pm UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879 "2026-03-15T22:14:10Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@godzfire](https://community.mp3tag.de/u/godzfire)
#### Post date: [March 15, 2026, 10:14pm UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879/1 "2026-03-15T22:14:11Z")
2018 Intel Mac Mini, Mac OS 15.7.4 (24G517), MP3Tag Version 1.10.3 (133)
Trying to use search/replace action for filenames doesn’t actually work. Using a different field like Title functions fine.
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [March 15, 2026, 10:59pm UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879/2 "2026-03-15T22:59:33Z")
> [@godzfire](#):
>
> Trying to use search/replace action for filenames doesn’t actually work
The correct field name for this would be `_FILENAME` (note the preceding underline character. The same is required for `_DIRECTORY` if you wish to use the Format Tag Field Quick Action for that as well.
It may be easier to use the Converter\>Tag - Filename instead.
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### Author:  [@godzfire](https://community.mp3tag.de/u/godzfire)
#### Post date: [March 16, 2026, 12:05am UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879/3 "2026-03-16T00:05:08Z")
Why is there a FILENAME in the list then? How is a user supposed to know this? It would seem like a good thing to correct/better clarify in that list.
There are things Search/Replace can do faster vs Converter\>Tag - Filename and also things it wouldn’t work for using the later for. It would be nice if Actions could be given an option for buttons or keyboard shortcuts.
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [March 16, 2026, 12:48am UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879/4 "2026-03-16T00:48:23Z")
> [@godzfire](#):
>
> Why is there a FILENAME in the list then?
If you manually type this in once it becomes part of the list. If you check the metadata of a file you tried to update this way you will find a new custom tag there with this name.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [March 23, 2026, 12:48am UTC](https://community.mp3tag.de/t/replace-filename-doesnt-work/70879/5 "2026-03-23T00:48:38Z")
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