diff --git a/lib/karma-webpack/controller.js b/lib/karma-webpack/controller.js
index 9fbd9f4..c7e491c 100644
--- a/lib/karma-webpack/controller.js
+++ b/lib/karma-webpack/controller.js
@@ -26,7 +26,7 @@ class KW_Controller {
         `
 karma-webpack does not currently support customized filenames via
 webpack output.filename, if this is something you need consider opening a ticket.
-defaulting ${newOptions.output.filename} to file[id].`.trim()
+defaulting ${newOptions.output.filename} to [name].js.`.trim()
       );
       delete newOptions.output.filename;
     }