diff --git a/scripts/commit-msg.crs b/scripts/commit-msg.crs
index 4e01af2..4668145 100755
--- a/scripts/commit-msg.crs
+++ b/scripts/commit-msg.crs
@@ -4,6 +4,9 @@ use std::{ env, fs, process };
 use std::path::PathBuf;
 use std::process::Command;
 
+/// Git commit message format check util
+///
+/// Commit format MUST be <type>(<scope>): subject
 fn main() {
     let arg1 = env::args().nth(1).unwrap_or_else(|| {
         exit_with_error_message("Commit message is EMPTY!");