diff --git a/packages/web/index.js b/packages/web/index.js
index 610416e64..777854f61 100644
--- a/packages/web/index.js
+++ b/packages/web/index.js
@@ -95,9 +95,6 @@ module.exports = (neutrino, opts = {}) => {
     exclude: [staticDir],
     babel: options.babel
   });
-  neutrino.use(clean, {
-    paths: [neutrino.options.output]
-  });
 
   neutrino.config
     .target('web')
@@ -162,6 +159,7 @@ module.exports = (neutrino, opts = {}) => {
         .use(optimize.ModuleConcatenationPlugin);
     })
     .when(neutrino.options.command === 'build', (config) => {
+      neutrino.use(clean, { paths: [neutrino.options.output] });
       neutrino.use(copy, {
         patterns: [{
           context: staticDir,