diff --git a/packages/http/src/server.js b/packages/http/src/server.js
index d81e7c3..3a682ef 100644
--- a/packages/http/src/server.js
+++ b/packages/http/src/server.js
@@ -29,7 +29,7 @@ export default {
         // eslint-disable-next-line no-param-reassign
         configs.http = R(join(__dirname, 'build/.neutrinorc.js'));
       }
-      else if (-1 !== onlyBuilds.indexOf('http')) {
+      else if (0 === onlyBuilds.length || -1 !== onlyBuilds.indexOf('http')) {
         const binary = `$(npm --prefix ${root} bin)/webpack-dev-server`;
         const config = `${__dirname}/build/webpack.config.js`;
         const options = {