# Use numbers at the beginning of the project name
**URL:** https://discourse.processing.org/t/use-numbers-at-the-beginning-of-the-project-name/46228
**Category:** Processing
**Created:** [April 16, 2025, 10:40am UTC](https://discourse.processing.org/t/use-numbers-at-the-beginning-of-the-project-name/46228 "2025-04-16T10:40:44Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@scuy](https://discourse.processing.org/u/scuy)
#### Post date: [April 16, 2025, 10:40am UTC](https://discourse.processing.org/t/use-numbers-at-the-beginning-of-the-project-name/46228/1 "2025-04-16T10:40:44Z")
When I use a number at the beginning of the project name, “sketch\_” is automatically added to the beginning of the saved name. Is this by design? Is there a setting to avoid this?
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### Author:  [@sableraph](https://discourse.processing.org/u/sableraph)
#### Post date: [April 16, 2025, 10:53am UTC](https://discourse.processing.org/t/use-numbers-at-the-beginning-of-the-project-name/46228/2 "2025-04-16T10:53:42Z")
Hi scuy, welcome to the community!
Processing sanitizes file names to ensure compatibility across different file systems and platforms. Sketch names that begin with a digit or anything other than a letter aren’t allowed, so Processing automatically adds `sketch_` in those cases. There’s no setting to change this behavior at the moment.
The relevant code is [here](https://github.com/processing/processing4/blob/ecd219b03d68702ca2330ebaf2b9d3c78ee8037a/app/src/processing/app/Sketch.java#L1856-L1871), if you’re curious.
Let us know if you have more questions!
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### Author:  [@scuy](https://discourse.processing.org/u/scuy)
#### Post date: [April 16, 2025, 12:27pm UTC](https://discourse.processing.org/t/use-numbers-at-the-beginning-of-the-project-name/46228/3 "2025-04-16T12:27:11Z")
@sableraph
Thank you for your detailed explanation.
I’m glad I was able to understand the specifications.