diff --git a/README.md b/README.md
index 8218968..8f074c8 100644
--- a/README.md
+++ b/README.md
@@ -54,4 +54,8 @@ Whether or not to write the manifest output into the [html-webpack-plugin](https
     <!-- app -->
     <%= htmlWebpackPlugin.files.webpackManifest %>
 </body>
-```
\ No newline at end of file
+```
+
+### Note
+
+* Webpack configurations that set `watch: true` won't generate a file and will cause this plugin to silently fail. This includes both `webpack-dev-server` and `webpack-dev-middleware`.