diff --git a/README.md b/README.md
index fc82ba8..d0e37e7 100644
--- a/README.md
+++ b/README.md
@@ -16,20 +16,21 @@ composer require --dev laravel-fans/lint
 php artisan lint:publish
 ```
 
-## use
+## usage
 
-lint code:
+### lint code
 
 ```shell
-php artisan lint:check .
-php artisan lint:check app/ tests/
-php artisan lint:check --standard=Squiz app/
+php artisan lint:code
+php artisan lint:code --fix
+php artisan lint:code app/ tests/
+php artisan lint:code --standard=Squiz app/
 php artisan lint:staged
 ```
 
-The default standard is PSR-12, feel free to change the `phpcs.xml`.
+The default standard is `phpcs.xml`, feel free to change it.
 
-lint route URL:
+### lint route URI
 
 ```shell
 php artisan lint:route
diff --git a/src/LintCodeCommand.php b/src/LintCodeCommand.php
index 4329bc7..16b2ac6 100644
--- a/src/LintCodeCommand.php
+++ b/src/LintCodeCommand.php
@@ -14,7 +14,7 @@ class LintCodeCommand extends Command
      * @var string
      */
     protected $signature = 'lint:code
-        {files*}
+        {files?*}
         {--fix : automatic fix}
         {--standard=phpcs.xml : coding standards}';
 
@@ -33,9 +33,11 @@ class LintCodeCommand extends Command
     public function handle()
     {
         $bin = $this->option('fix') ? 'phpcbf' : 'phpcs';
+        $files = empty($this->argument('files')) ? [ '.' ] : $this->argument('files');
+
         exec(
             "vendor/bin/$bin --standard=" . $this->option('standard')
-            . ' ' . implode(' ', $this->argument('files')),
+            . ' ' . implode(' ', $files),
             $output,
             $code
         );