diff --git a/packages/vue-cli-plugin-uni/lib/chain-webpack.js b/packages/vue-cli-plugin-uni/lib/chain-webpack.js
index 69005e793a0..5277538b4f8 100644
--- a/packages/vue-cli-plugin-uni/lib/chain-webpack.js
+++ b/packages/vue-cli-plugin-uni/lib/chain-webpack.js
@@ -35,7 +35,7 @@ module.exports = function chainWebpack (platformOptions, vueOptions, api) {
           const keys = ['publicPath', 'outputPath']
           keys.forEach(key => {
             generator[key] = pathData => {
-              const outputPath = oldOptions.outputPath(null, pathData.module.request)
+              const outputPath = oldOptions[key](null, pathData.module.request)
               const basename = path.basename(outputPath)
               return outputPath.substring(0, outputPath.length - basename.length)
             }