diff --git a/.rusty-hook.toml b/.rusty-hook.toml
index 7f5ba9c..ac6e912 100644
--- a/.rusty-hook.toml
+++ b/.rusty-hook.toml
@@ -1,5 +1,5 @@
 [hooks]
-pre-commit = "cargo fmt --all"
+pre-commit = "cargo fmt --all -- --check"
 pre-push = "cargo build"
 [logging]
 verbose = true