diff --git a/app/Commands/CommitCommand.php b/app/Commands/CommitCommand.php
index 57266ad..fde9672 100644
--- a/app/Commands/CommitCommand.php
+++ b/app/Commands/CommitCommand.php
@@ -116,7 +116,7 @@ function ($attempts) use ($cachedDiff, $type): string {
                     return $content;
                 })
                 ->tap(function (Collection $message): void {
-                    $message = $message->put('', null)->sortKeysUsing(static function (string $a, string $b): int {
+                    $message = $message->put('', '')->sortKeysUsing(static function (string $a, string $b): int {
                         $rules = ['subject', '', 'body'];
 
                         return array_search($a, $rules, true) <=> array_search($b, $rules, true);