rsnext/errors/invalid-project-dir-casing.mdx

---
title: Invalid Project Directory Casing
---

## Why This Error Occurred

When starting Next.js, the current directory is a different casing than the actual directory on your filesystem. This can cause files to resolve inconsistently.

This can occur when using a case-insensitive filesystem. For example, opening PowerShell on Windows navigating to `cd path/to/myproject` instead of `cd path/to/MyProject`.

## Possible Ways to Fix It

Ensure the casing for the current working directory matches the actual case of the real directory. Use a terminal that enforces case-sensitivity.

## Useful Links

- [Next.js CLI documentation](/docs/pages/api-reference/next-cli)
- [Case sensitivity in filesystems](https://en.wikipedia.org/wiki/Case_sensitivity#In_filesystems)