diff --git a/lib/rules/no-cjs-in-config.js b/lib/rules/no-cjs-in-config.js
index bc2757e..35e6fb3 100644
--- a/lib/rules/no-cjs-in-config.js
+++ b/lib/rules/no-cjs-in-config.js
@@ -4,6 +4,8 @@
  */
 'use strict'
 
+const path = require('path')
+
 // ------------------------------------------------------------------------------
 // Rule Definition
 // ------------------------------------------------------------------------------
@@ -32,7 +34,7 @@ module.exports = {
 
     return {
       Program (node) {
-        const filename = context.getFilename()
+        const filename = path.basename(context.getFilename())
         if (filename === configFile) {
           isNuxtConfig = true
         }