diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b8f605..6979961 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- `.#checks.nixfmt` can be run from everywhere when nixFiles are relative to project.
+
 ## [10.0.0] - 2024-02-06
 
 ### Added
diff --git a/ci/nixfmt b/ci/nixfmt
index 70490a2..f6f28bc 100644
--- a/ci/nixfmt
+++ b/ci/nixfmt
@@ -13,6 +13,8 @@ if [[ $* =~ (^|[[:space:]])+--fix([[:space:]]|$)+ ]]; then
     check=""
 fi
 
+cd "$(git rev-parse --show-toplevel)"
+
 if [ $# -eq 0 ] || [ -z "$check" ]; then
     exitCode=0
     files=()