diff --git a/library/think/console/command/Build.php b/library/think/console/command/Build.php
index 7201ef63..f96463f4 100644
--- a/library/think/console/command/Build.php
+++ b/library/think/console/command/Build.php
@@ -11,7 +11,6 @@
 
 namespace think\console\command;
 
-
 use think\console\Input;
 use think\console\input\Option;
 use think\console\Output;
@@ -25,7 +24,7 @@ class Build extends Command
     protected function configure()
     {
         $this->setName('build')
-             ->setDefinition([new Option('config', null, Option::VALUE_OPTIONAL, "build.php path")])
+             ->setDefinition([new Option('config', null, Option::VALUE_OPTIONAL, "build.php path", APP_PATH . 'build.php')])
              ->setDescription('Build Application Dirs');
     }
 
@@ -45,4 +44,4 @@ class Build extends Command
         $output->writeln("Successed");
 
     }
-}
\ No newline at end of file
+}