diff --git a/packages/@vue/cli-plugin-typescript/index.js b/packages/@vue/cli-plugin-typescript/index.js
index ac5115f398..39c26d4488 100644
--- a/packages/@vue/cli-plugin-typescript/index.js
+++ b/packages/@vue/cli-plugin-typescript/index.js
@@ -50,7 +50,7 @@ module.exports = (api, options) => {
       loader: 'ts-loader',
       options: {
         transpileOnly: true,
-        appendTsSuffixTo: ['\\.vue$'],
+        appendTsSuffixTo: [/\.vue$/],
         // https://github.com/TypeStrong/ts-loader#happypackmode-boolean-defaultfalse
         happyPackMode: useThreads
       }
@@ -59,7 +59,7 @@ module.exports = (api, options) => {
     tsxRule.use('ts-loader').loader('ts-loader').tap(options => {
       options = Object.assign({}, options)
       delete options.appendTsSuffixTo
-      options.appendTsxSuffixTo = ['\\.vue$']
+      options.appendTsxSuffixTo = [/\.vue$/]
       return options
     })