diff --git a/lib/builder/generator.js b/lib/builder/generator.js
index fec70335b2..36684fec26 100644
--- a/lib/builder/generator.js
+++ b/lib/builder/generator.js
@@ -29,7 +29,7 @@ export default class Generator extends Tapable {
     await this.initiate({ build: build, init: init })
     const routes = await this.initRoutes()
     const errors = await this.generateRoutes(routes)
-    this.postGenerate()
+    await this.postGenerate()
 
     const duration = Math.round((Date.now() - s) / 100) / 10
     this.printReport(duration, errors)