diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0c37423..2accdfc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -4,8 +4,6 @@ repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v5.0.0
     hooks:
-      - id: trailing-whitespace
-      - id: end-of-file-fixer
       - id: check-merge-conflict
       - id: check-added-large-files
       - id: check-yaml
@@ -16,3 +14,4 @@ repos:
     hooks:
       - id: clang-format
         types_or: [c, c++]
+        args: [--dry-run, -Werror]
diff --git a/justfile b/justfile
index f2edb12..a1f7d72 100644
--- a/justfile
+++ b/justfile
@@ -2,6 +2,10 @@
 default:
     @just --list
 
+# format C/H files in place
+fmt:
+    git ls-files '*.c' '*.h' | xargs --no-run-if-empty clang-format -i
+
 # bump submodule(s) to latest tag
 bump-qmk submodule="":
     #!/usr/bin/env bash