diff --git a/lib/prepare.js b/lib/prepare.js
index 39c09e01b1..12cea9e039 100644
--- a/lib/prepare.js
+++ b/lib/prepare.js
@@ -61,7 +61,7 @@ if (!Object.assign) Object.assign = require('object-assign')`
 
   // 5. handle user override
   const overridePath = path.resolve(sourceDir, '.vuepress/override.styl')
-  const hasUserOverride = options.useDefaultTheme && fs.existsSync(overridePath)
+  const hasUserOverride = fs.existsSync(overridePath)
   await writeTemp(`override.styl`, hasUserOverride ? `@import(${JSON.stringify(overridePath)})` : ``)
 
   // 6. handle enhanceApp.js