diff --git a/bin/vuepress.js b/bin/vuepress.js
index e16c7796f7..00ea5bdfe2 100755
--- a/bin/vuepress.js
+++ b/bin/vuepress.js
@@ -36,7 +36,8 @@ program
   .description('build dir as static site')
   .option('-d, --dest <outDir>', 'specify build output dir (default: .vuepress/dist)')
   .option('--debug', 'build in development mode for debugging')
-  .action((dir = '.', { debug, outDir }) => {
+  .action((dir = '.', { debug, dest }) => {
+    const outDir = dest ? path.resolve(dest) : null
     wrapCommand(build)(path.resolve(dir), { debug, outDir })
   })