diff --git a/lib/nuxt.js b/lib/nuxt.js
index 798941a0de..ba164e9389 100644
--- a/lib/nuxt.js
+++ b/lib/nuxt.js
@@ -21,6 +21,7 @@ class Nuxt {
       head: {},
       plugins: [],
       css: [],
+      modules: [],
       cache: false,
       loading: {
         color: 'black',