diff --git a/packages/vue-cli-plugin-uni/packages/webpack-uni-app-loader/view/main.js b/packages/vue-cli-plugin-uni/packages/webpack-uni-app-loader/view/main.js
index c02ebf0b5096f5f00888aa2f3dfa5c16206bcd9e..fbdc69374e1920845e6ae7abccb22b76e8fab98e 100644
--- a/packages/vue-cli-plugin-uni/packages/webpack-uni-app-loader/view/main.js
+++ b/packages/vue-cli-plugin-uni/packages/webpack-uni-app-loader/view/main.js
@@ -30,7 +30,7 @@ function getDefineComponents ({
   }) => `Vue.component('${name}',require('${source}').default)`)
 }
 
-const appVueFilePath = path.resolve(process.env.UNI_INPUT_DIR, 'app.vue')
+const appVueFilePath = path.resolve(process.env.UNI_INPUT_DIR, 'App.vue')
 
 function getStylesCode (loaderContext) {
   if (!fs.existsSync(appVueFilePath)) {