diff --git a/lib/builder/generator.js b/lib/builder/generator.js
index 5845b17049..f2548a6c18 100644
--- a/lib/builder/generator.js
+++ b/lib/builder/generator.js
@@ -26,12 +26,14 @@ export default class Generator extends Tapable {
     const s = Date.now()
     let errors = []
 
+    // Add flag to set process.generate
+    this.builder.forGenerate()
+
     // Wait for nuxt be ready
     await this.nuxt.ready()
 
     // Start build process
     if (build) {
-      this.builder.forGenerate() // Add flag to set process.generate
       await this.builder.build()
     }