diff --git a/packages/webpack-plugin/lib/utils/ts-loader-watch-run-loader-filter.js b/packages/webpack-plugin/lib/utils/ts-loader-watch-run-loader-filter.js
index eb93027bc4..80e38a5969 100644
--- a/packages/webpack-plugin/lib/utils/ts-loader-watch-run-loader-filter.js
+++ b/packages/webpack-plugin/lib/utils/ts-loader-watch-run-loader-filter.js
@@ -1,7 +1,10 @@
+const toPosix = require('./to-posix')
+
 module.exports = (loaders, loaderIndex) => {
   for (let i = loaderIndex; i >= 0; i--) {
     const currentLoader = loaders[i]
-    if (currentLoader.path.endsWith('node_modules/ts-loader/dist/stringify-loader.js')) {
+    const currentLoaderPath = toPosix(currentLoader.path)
+    if (currentLoaderPath.endsWith('node_modules/ts-loader/dist/stringify-loader.js')) {
       return i
     }
   }