diff --git a/README.md b/README.md
index 8a152da..fed57a4 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,5 @@ Compile through Arduino IDE or equivalent.
 
 ## Contributing
 
-Before `git commit`, run `git clang-format` to format stagged files.
+Before `git commit`, run `git clang-format --staged` to format stagged files and
+then `git add` to commit formatting.